Hillary

Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 6 Practice 3 Multiply by 7 to finish your assignments.

Math in Focus Grade 3 Chapter 6 Practice 3 Answer Key Multiply by 7

Example

Question 1.

Answer:
6×7 = 42.

Explanation:
In the above image, we can see that the array of 6×7 which is 42.

Question 2.

Answer:
7×7 = 49.

Explanation:
In the above image, we can see that the array of 7×7 which is 49.

Fill in the missing numbers.

Question 3.
6 sevens = 6 × ___
Answer:
6 sevens = 6 × 7 = 42.

Explanation:
Given that 6 sevens which is 6 × 7 = 42.

Question 4.
9 × 7 = ___ sevens
Answer:
9 × 7 = 9 sevens.

Explanation:
Given that 9 × 7 which have 9 sevens which is 63.

Question 5.
5 + 5 + 5 + 5 + 5 + 5 + 5 = 7 × ___
Answer:
5 + 5 + 5 + 5 + 5 + 5 + 5 = 7 × 5 = 35.

Explanation:
Given that 5 + 5 + 5 + 5 + 5 + 5 + 5 which can be also 7×5 = 35.

Question 6.
10 × 7 = 7 × ___
Answer:
10 × 7 = 7 × 10 =70.

Explanation:
Here, by using commutative property we can write 10 × 7 = 7 × 10 = 70.

Multiply. Use multiplication facts you know to and other multiplication facts.

Question 9.
7 × 4 = 5 groups of 4 + ___ groups of 4
= ____ + ____
= ____
Answer:
7 × 4 = 28.

Explanation:
Given that 7 × 4 which is
= 5 groups of 4 + 2 groups of 4
= 20+8
= 28.

Question 10.
5 × 7 = ___
7 × 7 = 5 groups of 7 + __ groups of 7
= ____ + ____
= _____
Answer:
5 × 7 = 35,
7 × 7 = 49.

Explantion:
Given that 5 × 7 which is 35,
5 × 7 = 35
7 × 7 = 5 groups of 7 + 2 groups of 7
= 35+14
= 49.

Question 11.
10 × 7 = ____
9 × 7 = 10 groups of 7 – ___ groups of 7
= ____ + ____
= ___

Answer:
10 × 7 = 70.
9 × 7 = 63.

Explanation:
Given that 10 × 7 which is 70,
9 × 7 = 10 groups of 7 – 1 groups of 7
= 70 + 7
= 63.

Multiply and match.

Question 12.

Answer:

Solve.

Question 13.
Mrs. Thompson buys 2 books. Each book costs $7.
How much does Mrs. Thompson pay in all?
2 × $7 = $ ___
Mrs. Thompson pays $__________ in all.
Answer:
Mrs. Thompson pays $14 in all.

Explanation:
Given that Mrs. Thompson bought 2 books and each book costs $7. So the total cost of Mrs. Thompson pay in all is 2 × $7 which is $14.

Question 14.
A box contains 7 crayons.
Alex packs 10 such boxes into his bog.
How many crayons does Alex have in all?
10 × 7 = ______
Alex has ___ crayons in all.
Answer:
Alex has 70 crayons in all.

Explanation:
Given that a box contains 7 crayons and Alex packs 10 such boxes into his box. So the number of crayons does Alex have in all is 7 × 10 is 70 crayons.

Question 15.
Mr. Dean gives each student 7 okras in art class.
How many okras does he give 4 students?
4 × 7 = ___
He gives 4 students ___ okras.

Answer:
He gives 4 students 28 okras.

Explanation:
Given that Mr. Dean gives each student 7 okras in art class. So the number of okras does he give 4 students is
7 × 4 = 28 okras.

Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 7 Practice 3 Multiplying Ones, Tens, and Hundreds with Regrouping to finish your assignments.

Math in Focus Grade 3 Chapter 7 Practice 3 Answer Key Multiplying Ones, Tens, and Hundreds with Regrouping

Fill in the missing numbers.

Example
3 × 26 = ?
Step 1
Multiply the ones by 3.

3 × 6 ones = 18 ones
Regroup the ones.
18 ones = 1 ten 8 ones
Step 2
Multiply the tens by 3.
3 × 2 tens = 6 tens
Add the tens.
1 ten + 6 tens = 7 tens
So, 3 × 26 = 78.

Fill in the missing numbers.

Question 1.
5 × 16 = ?

Step 1
Multiply the ones by 5.
5 × ___ ones = ___ ones
Regroup the ones.
___ ones = ___ tens ___ ones
Step 2
Multiply the tens by 5.
5 × ___ tens = ___ tens
Add the tens.
___ tens + ___ tens = ___ tens
So, 5 × 16 = ___
Answer:
5 × 16 = 80.

Explanation:
Here we will multiply the ones by 5 which is
5 × 6 ones = 30 ones
then we will regroup the ones which is
30 ones = 3 tens 1 ones
Step 2
Multiply the tens by 5.
5 × 1 tens = 50 tens
Add the tens.
50 tens + 30 tens = 80 tens
So, 5 × 16 = 80.

Fill in the missing numbers.

Question 2.
4 × 82 = ?

Step 1
Multiply the ones by 5.
4 × ___ ones = ___ ones
Step 2
Multiply the tens by 4.
4 × ___ tens = ___ tens
Regroup the tens.
___ tens = ___ hundreds ___ tens
So, 4 × 82 = ___
Answer:
4 × 82 = 328.

Explanation:
Multiply the ones by 5.
4 × 2 ones = 8 ones
Step 2
Multiply the tens by 4.
4 × 8 tens = 32 tens
Regroup the tens.
320 tens = 3 hundreds 20 tens
So, 4 × 82 = 328.

Fill in the missing numbers.

Question 6.
5 × 78 = ?
Step 1
Multiply the ones by 5.
5 × ___ ones = ___ ones
Step 2
Multiply the tens by 5.
5 × ___ tens = ___ tens
Regroup the tens.
___ tens = ___ hundreds ___ tens
So, 5 × 78 = ___
Answer:
5 × 78 = 390.

Explanation:
Step 1
Multiply the ones by 5.
5 × 8 ones = 40 ones
Step 2
Multiply the tens by 5.
5 × 7 tens = 350 tens
Regroup the tens.
350 tens = 3 hundreds 50 tens
So, 5 × 78 = 390.

Fill in the missing numbers.

Question 3.
4 × 115 = ?
Step 1

Multiply the ones by 5.
4 × ___ ones = ___ ones
Regroup the ones.
___ ones = ___ tens ___ ones
Step 2
Multiply the tens by 4.
4 × ___ ten = ___ tens
Add the tens.
___ tens + ___ tens = ___ tens
Regroup the tens.
___ tens = ___ hundreds = ___ tens
So, 5 × 78 = ___
Answer:

Fill in the missing numbers.

Question 4.
4 × 115 = ?
Step 1

Multiply the ones by 5.
4 × ___ ones = ___ ones
Regroup the ones.
___ ones = ___ tens ___ ones
Step 2
Multiply the tens by 4.
4 × ___ ten = ___ tens
Add the tens.
___ tens + ___ tens = ___ tens
Step 3
Multiply the hundreds.
4 × ___ hundred = ___ hundreds
So, 4 × 115 = ____
Answer:
4 × 115 = 460.

Explanation:
Multiply the ones by 4.
4 × 5 ones = 20 ones
Regroup the ones.
20 ones = 2 tens 0 ones
Step 2
Multiply the tens by 4.
4 × 1 ten = 4 tens
Add the tens.
4 tens + 2 tens = 6 tens
Step 3
Multiply the hundreds.
4 × 1 hundred = 4 hundreds
So, 4 × 115 = 460.

Question 5.
4 × 242 = ?
Step 1

Multiply the ones by 4.
4 × ___ ones = ___ ones
Step 2
Multiply the tens by 4.
4 × ___ tens = ___ tens
Regroup the tens.
___ tens = ___ hundred ___ tens
Step 3
Multiply the hundreds by 4.
4 × ___ hundreds = ___ hundreds
Add the hundreds.
___ hundred + ___ hundreds
= ___ hundreds
So, 4 × 242 = ____
Answer:
4 × 242 = 968.

Explanation:
Multiply the ones by 4.
4 × 2 ones = 8 ones
Step 2
Multiply the tens by 4.
4 × 4 tens = 4 tens
Regroup the tens.
12 tens = 1 hundred 2 tens
Step 3
Multiply the hundreds by 4.
4 × 2 hundreds = 8 hundreds
Add the hundreds.
8 hundred + 1 hundreds
= 9 hundreds
So, 4 × 242 = 968.

Fill in the missing numbers.

Question 6.
5 × 145 = ?
Step 1

Multiply the ones by 5.
5 × ___ ones = ___ ones
Regroup the tens.
___ ones = ___ tens ___ ones
Step 2
Multiply the tens by 5.
5 × ___ tens = ___ tens
Add the tens
__ tens + ___ tens = __ tens
Regroup the tens
__ tens = ___ hundreds __ tens
Step 3
Multiply the hundreds by 5.
5 × ___ hundred = ___ hundreds
Add the hundreds.
___ hundreds + ___ hundreds
= ___ hundreds
So, 5 × 145 = ____
Answer:

Explanation:
Multiply the ones by 5.
5 × 5 ones = 25 ones
Regroup the tens.
25 ones = 2 tens 5 ones
Step 2
Multiply the tens by 5.
5 × 4 tens = 20 tens
Add the tens
20 tens + 5 tens = 25 tens
Regroup the tens
25 tens = 2 hundreds 5 tens
Step 3
Multiply the hundreds by 5.
5 × 1 hundred = 5 hundreds
Add the hundreds.
5 hundreds +2 hundreds
= 7 hundreds
So, 5 × 145 = 725.

Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 7 Practice 4 Multiplying Ones, Tens, and Hundreds with Regrouping to finish your assignments.

Math in Focus Grade 3 Chapter 7 Practice 4 Answer Key Multiplying Ones, Tens, and Hundreds with Regrouping

Multiply and complete.

Question 1.

What key cannot unlock treasure chests?

Write the letters which match the answers to find out.

Answer:
The key for treasure chests is DONKEY.

Explanation:
The key for treasure chests is DONKEY.

Solve.

Example
Gina reads 84 pages of her book in a day. How many pages does Gina read in 5 days?
84 × 5 = 420
Gina reads 420 pages in 5 days.

Question 2.
187 cars are in a parking lot. Each car has 4 wheels. How many wheels do the cars have in all?
Answer:
The number of wheels does the cars have in all is 748 wheels.

Explanation:
Given that 187 cars are in a parking lot and each car has 4 wheels. So the number of wheels does the cars have in all is 187×4 which is 748 wheels.

Question 3.
198 students attend a school. Each student carries 3 books. How many books do they carry in all?
Answer:
The number of books does they carry in all is 594 books.

Explanation:
Given that 198 students attend a school and each student carries 3 books. So the number of books does they carry in all is 198×3 which is 594 books.

Question 4.
Jill feeds her pet hamster 5 food pellets each day. How many food pellets does she feed her hamster in 165 days?
Answer:
Jill feeds 825 food pellets.

Explanation:
Given that Jill feeds her pet hamster 5 food pellets each day, so for 165 days Jill feeds 165×5 which is 825 food pellets.

Multiply.

Question 5.
450 × 2 = ______
Answer:
450 × 2 = 900.

Explanation:
The multiplication of 450 and 2 is 900.

Question 6.
232 × 4 = ____
Answer:
232 × 4 = 928.

Explanation:
The multiplication of 232 and 4 is 928.

Question 7.
259 × 3 = ______
Answer:
259 × 3 = 777.

Explanation:
The multiplication of 259 and 3 is 777.

Question 8.
196 × 5 = ___
Answer:
196 × 5 = 980.

Explanation:
The multiplication of 196 and 5 is 980.

Complete.

Question 9.
Circle the chest with the greatest product.
Answer:
Here, we have circled the greatest product which is

Question 10.
Underline the chest with the least product.

Answer:
Here, we have underlined the least product which is

Solve.
Then circle the chest with the correct answer.

Question 11.
Keith runs from Tree A to B to C, to D to E, then to F. The trees are planted 134 meters apart from each other. How for does Keith run in all?

Answer:
Keith runs 670 meters in all.

Explanation:
Given that Keith runs from Tree A to B to C, to D to E, then to F and the trees are planted 134 meters apart from each other is 670 meters.

Practice the problems of Math in Focus Grade 3 Workbook Answer Key Chapter 8 Practice 5 Division with Regrouping in Tens and Ones to score better marks in the exam.

Math in Focus Grade 3 Chapter 8 Practice 5 Answer Key Division with Regrouping in Tens and Ones

Divide. Use base-ten blocks to help you.

Question 1.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
3 tens and 2 ones is converted to 2 tens and 12 ones

Question 2.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
7 tens and 8 ones is converted to 6 tens and 18 ones

Question 3.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
8 tens and 3 ones is converted to 6 tens and 23 ones

Question 4.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
9 tens and 2 ones is converted to 8 tens and 12 ones

Question 5.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
6 tens and 9 ones is converted to 4 tens and 29 ones

Question 6.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
7 tens and 5 ones is converted to 5 tens and 25 ones

Question 7.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
6 tens and 3 ones is converted to 5 tens and 13 ones

Question 8.

Answer:

Explanation:
With the help of base ten blocks regrouping is done
7 tens and 2 ones is converted to 6 tens and 12 ones

What kind of jam cannot be eaten?

Match the letters to the quotients below to find out.

Question 9.

Answer:

Explanation:
Matched according to the quotients
The name was traffic jam.

Practice the problems of Math in Focus Grade 3 Workbook Answer Key Chapter 9 Practice 1 Real-World Problems: Multiplication to score better marks in the exam.

Math in Focus Grade 3 Chapter 9 Practice 1 Answer Key Real-World Problems: Multiplication

Solve. Use bar models to help you.

Example
Carlos bakes 42 muffins.
Kim bakes twice as many muffins as Carlos.
How many muffins does Kim bake?

42 × 2 = 84
Kim bakes 84 muffins.

Question 1.
Mrs. Bently pays $95 for a new bed. Mrs. Lee pays three times as much as How much does Mrs. Lee pay for the new bed?

Answer:

Explanation:
Mrs. Bently pays $95 for a new bed.
Mrs. Lee pays three times as much as 1 bed
95 x 3 = 285
$285 Mrs. Lee pay for the new bed

Solve. Draw bar models to help you.

Question 2.
Mr. Suarez drove 98 miles on his vacation this year. He drove 4 times that distance last year. How far did Mr. Suarez drive on his vacation last year?

Mr. Suarez drove ___ miles on his vacation last year.
Answer:
Mr. Suarez drove 392 miles on his vacation last year.
Explanation:

98 x 4 = 392 miles

Question 3.
School A collects 76 bundles of newspaper for recycling. School B collects 5 times the number of bundles as School A. How many bundles of newspaper does School B collect?
Answer:
980 bundles
Explanation:
School A collects 76 bundles of newspaper for recycling.
School B collects 5 times the number of bundles as School A.
76 x 5 = 380
980 bundles of newspaper that School B collect

Go through the Math in Focus Grade 4 Workbook Answer Key Chapter 5 Practice 1 Average to finish your assignments.

Math in Focus Grade 4 Chapter 5 Practice 1 Answer Key Average

Find the mean or average of each set of data.

Example
6, 14, 18,22
Step 1
Find the sum of the four numbers.
6 + 14 + 18 + 22 = 60
Step 2
Divide the sum by 4.
60 ÷ 4 = 15

The mean or average of the set of numbers is 15

Question 1.
Here are the weights of 5 pieces of luggage at an airport.
14 lb, 18 lb, 21 lb, 27 lb, 30 lb
Step 1
Find the total weight of all the pieces of luggage.
___ + ___ + ___ + ____ + ____
= ____ lb
Step 2
Divide the total by 5.
____ ÷ 5 = ___ lb
What is the average weight of the pieces of luggage? ____ lb

Answer:
The total weight of all the pieces of luggage is 110 lb.
The average weight of the pieces of luggage is 22 lb.

Explanation:
Step 1:
Given that the weight of 5 pieces of luggage at an airport is 14 lb, 18 lb, 21 lb, 27 lb, 30 lb. So the total weight of all the pieces of luggage is 14 lb+18 lb+21  lb+27 lb+30 lb = 110 lb.
Step 2:
Here, we will divide the total weight of 5 pieces of luggage which is 110lb
110 lb ÷ 5 = 22 lb.
So the average weight of the pieces of luggage is 22 lb.

Find the mean of each set of data.

Question 2.
37, 0, 67, 44
Answer:
The mean is 37.

Explanation:
Here, to find the mean we will add all the given data, and then we will divide by the number of values in the set. So the mean of the given data is
37+0+67+44 which is 148 ÷ 4 = 37.

Question 3.
$8, $12, $15, $29
Answer:
The mean is $16.

Explanation:
Here, to find the mean we will add all the given data, and then we will divide by the number of values in the set. So the mean of the given data is
$8+$12+$15+$29 which is 64 ÷ 4 = 16.

Question 4.
15 pt, 21 pt, 34 pt, 48 pt, 52 pt
Answer:
The mean is 34pt.

Explanation:
Here, to find the mean we will add all the given data, and then we will divide by the number of values in the set. So the mean of the given data is
15 pt+21 pt+34 pt+48 pt+52 pt which is 170 ÷ 5 = 34.

Question 5.
28yd, 61 yd, 19yd, 43yd, 89yd, 126yd
Answer:
The mean is 61yd.

Explanation:
Here, to find the mean we will add all the given data, and then we will divide by the number of values in the set. So the mean of the given data is
28yd+61 yd+19yd+43yd+89yd+126yd which is 366 ÷ 6 = 61.

Question 6.
55 lb, 246 lb, 1oo lb, 34 lb, 95 lb, 460 lb
Answer:
The mean is 165lb.

Explanation:
Here, to find the mean we will add all the given data, and then we will divide by the number of values in the set. So the mean of the given data is
55 lb+246 lb+1oo lb+34 lb+95 lb+460 lb which is 990 ÷ 6 = 165.

Complete. Use the data in the table.

The table shows the distances Wayne jogged on 5 days.

Question 7.
How many kilometers did he jog altogether?
Answer:
The number of kilometers did he jog altogether is 20 km.

Explanation:
Given that the distances Wayne jogged on 5 days, so the number of kilometers did he jog altogether is 3+2+4+5+6 which is 20 km.

Question 8.
On average, how many kilometers did he jog each day?
Answer:
The average number of kilometers did he jog each day is 4 km.

Explanation:
The average number of kilometers did he jog each day is 20÷5 which is 4 km.

Complete. Use the data in the table.

The table shows the number of trophies a school collected over 6 years.

Question 9.
What is the total number of trophies collected in 6 years?
Answer:
The total number of trophies collected in 6 years is 96.

Explanation:
Given that the number of trophies a school collected over 6 years, so the total number of trophies collected in 6 years is 15+9+12+18+20+22 which is 96.

Question 10.
What is the average number of trophies collected each year?

Answer:
The average number of trophies collected each year is 96.

Explanation:
The average number of trophies collected each year is 96÷6 which is 16.

Show your work

Example
Mrs. Lim made 6,250 milliliters of orange juice and poured it into 5 containers. Find the mean amount of juice in each container.
6,250 ÷ 5 = 1,250 mL
The mean amount of a juice in each container is 1,250 mL.

Question 11.
A chess club began accepting members on January 1. By September 30 of the same year, the club had a total of
504 members. What was the average number of members who joined the club each month?
Answer:
The average number of members who joined the club each month is 56 members.

Explanation:
Given that a chess club began accepting members on January 1 and by September 30 of the same year, the club had a total of 504 members. As there are 9 months from January to September,  so the average number of members who joined the club each month is 504÷30 which is 56 members.

Solve. Show your work.

Example
The average number of goals scored by a soccer team in a game was 4. The team played a total of 22 games. What was the total number of goals scored by the team?
4 × 22 = 88 goals

Question 12.
The mean length of the sides of a triangular plot of land is 18 yards. What is its perimeter?
Answer:
The mean length of the sides of the triangular plot of land is 54 yards.

Explanation:
Given that the perimeter of the triangular plot is 18 yards. As the formula of the perimeter is
(a+b+c)/3. So the mean length of the sides of the triangular plot of land is (a+b+c)/3 = 18 which is
a+b+c = 18×3
= 54 yards.

Question 13.
There are 12 peaches in a carton. The mean mass of all the peaches is 175 grams. What is their total mass?
Answer:
The total mass of the peaches is 21,000 grams.

Explanation:
Given that there are 12 peaches in a carton and the mean mass of all the peaches is 175 grams. So the total mass of the peaches is 12×175 which is 21,000 grams.

Question 14.
Alicia sews costumes for a school play. She takes an average of 86 minutes to sew each costume. How long would she take to sew 16 of these costumes?
Answer:
The time would she take to sew 16 of these costumes is 1,376 minutes.

Explanation:
Given that Alicia sews costumes for a school play and she takes an average of 86 minutes to sew each costume. So the time would she take to sew 16 of these costumes is 16×86 which is 1,376 minutes.

This handy Math in Focus Grade 1 Workbook Answer Key Chapter 4 Practice 1 Ways to Subtract detailed solutions for the textbook questions.

Math in Focus Grade 1 Chapter 4 Practice 1 Answer Key Ways to Subtract

Cross out to subtract. Then circle the answer.

Example

Question 1.

Answer:

Explanation:
The difference between 10 and 1 is 9

Question 2.

Answer:

Explanation:
The difference between 8 and 2 is 6

Write a subtraction sentence for each picture.

Example

Question 3.

Answer:

Explanation:
The difference between 5 and 3 is 2

Question 4.

Answer:

Explanation:
The difference between 9 and 3 is 6

Question 5.

Answer:

Explanation:
The difference between 10 and 2 is 8

Question 6.

Answer:

Explanation:
The difference between 6 and 0 is 6

Complete.

Example

Question 7.

What is 3 less than 6?
6 – 3 = ____
Answer:
6 – 3 = 3
Explanation:
The difference between 6 and 3 is 3

Cross out to subtract.
Then write the subtraction sentence.

Example

Question 8.
What is 4 less than 7?

Answer:

Explanation:
The difference between 7 and 4 is 3

Cross out to subtract.
Then write the subtraction sentence.

Question 9.
What is 2 less than 9?

Answer:

Explanation:
The difference between 9 and 2  is 7

Subtract. Count on from the number that is less. Fill in the blanks.

Example

Question 10.

Answer:

Question 11.

Answer:

Question 12.

Answer:

Count back from the greater number to subtract. Fill in the blanks.

Example

Question 13.

Answer:

Question 14.

Answer:

Question 15.

Answer:

Question 16.

Answer:

Question 17.

Answer:

Question 18.

Answer:

Color the correct shape.

Example

Question 19.

Answer:

Question 20.

Answer:

Question 21.

Answer:

Question 22.

Answer:

Go through the Math in Focus Grade 1 Workbook Answer Key Chapter 17 Practice 4 Subtraction with Regrouping to finish your assignments.

Math in Focus Grade 1 Chapter 17 Practice 4 Answer Key Subtraction with Regrouping

Subtract.

Question 1.

Answer:
64 – 8 = 56.

Explanation:
Here, we will perform regrouping as the number 4 is less than 8. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 64-8 is 56.

Question 2.

Answer:
93-5 = 88.

Explanation:
Here, we will perform regrouping as the number 3 is less than 5. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 93-5 is 88.

Question 3.

Answer:
78-9 = 69.

Explanation:
Here, we will perform regrouping as the number 8 is less than 9. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 78-9 is 69.

Question 4.

Answer:
87-8 = 79.

Explanation:
Here, we will perform regrouping as the number 7 is less than 8. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 87-8 is 79.

Question 5.

Answer:
50-2 = 48.

Explanation:
Here, we will perform regrouping as the number 0 is less than 2. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 50-2 = 48.

Question 6.

Answer:
80-6 = 74.

Explanation:
Here, we will perform regrouping as the number 0 is less than 6. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 80-6 is 74.

Fill in the missing numbers.

Question 7.
72 – 9 = _________

Answer:
72-9 = 63.

Explanation:
Here, we will perform regrouping as the number 2 is less than 9. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 72-9 is 63.

Question 8.
91 – 4 = ___________

Answer:
91-4 = 87.

Explanation:
Here, we will perform regrouping as the number 1 is less than 4. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 91-4 is 87.

Question 9.
Kayla drops a ball into a number machine. Which ball is it? Write the number in the ○.


Answer:
The ball is 85.

Explanation:
Given that Kayla drops a ball into a number machine, it subtracts 8 and the output is 77. So to find the ball we will add 77+8 which is 85. So the ball is 85.

Subtract.

Question 10.

Answer:
52-38 = 14.

Explanation:
Here, we will perform regrouping as the number 2 is less than 8. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 52-38 is 14.

Question 11.

Answer:
76-49 = 27.

Explanation:
Here, we will perform regrouping as the number 6 is less than 9. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 76-49 is 27.

Question 12.

Answer:
85-38 = 47.

Explanation:
Here, we will perform regrouping as the number 5 is less than 8. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 85-38 is 47.

Question 13.

Answer:
53-47 = 6.

Explanation:
Here, we will perform regrouping as the number 3 is less than 7. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 53-47 is 6.

Question 14.

Answer:
90-56 = 34.

Explanation:
Here, we will perform regrouping as the number 0 is less than 6. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 90-56 is 34.

Question 15.

Answer:
73-56 = 17.

Explanation:
Here, we will perform regrouping as the number 3 is less than 6. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 73-56 is 17.

Fill in the missing numbers.

Question 16.
83 – 26 = __________

Answer:
83-26 = 57.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 83-26 is 57.

Question 17.
95 – 38 = ____________

Answer:
95-38 = 57.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 95-38 is 57

Question 18.
Ken drops a ball into a number machine. Which ball is it? Write the number in the ○.


Answer:
The in ball is 90.

Explanation:
Gien that Ken drops a ball and it subtracts 43. The out ball is 47, so the in ball is 47+43 which is 90.

Color the correct answer.

Question 19.


Answer:

Subtract.

Question 20.
56 – 8 = __________
Answer:
56-8 = 48.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 56-8 is 48.

Question 21.
73 – 4 = __________
Answer:
73-4 = 69.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 73-4 is 69.

Question 22.
67 – 8 = ___________
Answer:
67-8 = 59.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 67-8 is 59.

Question 23.
75 – 9 = ____________
Answer:
75-9 = 66.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 75-9 is 66.

Question 24.
50 – 40 = __________
Answer:

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of

Question 25.
87 – 11 = ___________
Answer:
87-11 = 76.

Explanation:
The subtraction of 87-11 is 76.

Question 26.
90 – 50 = ___________
Answer:
90-50 = 40.

Explanation:
The subtraction of 90-50 is 40.

Question 27.
93 – 20 = __________
Answer:
93-20 = 73.

Explanation:
The subtraction of 93-20 is 73.

Question 28.
58 – 18 = __________
Answer:
58-18 = 40.

Explanation:
The subtraction of 58-18 is 40.

Question 29.
61 – 14 = __________
Answer:
61-14 = 47.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 61-14 is 47.

Question 30.
47 – 39 = __________
Answer:
47-39 = 8.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 47-39 is 8.

Question 31.
53 – 27 = __________
Answer:
53-27 = 26.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 53-27 is 26.

Question 32.
30 – 28 = __________
Answer:
30-28 = 2.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 30-28 is 2.

Question 33.
90 – 88 = __________
Answer:
90-88 = 2.

Explanation:
Here, we will perform regrouping. Regrouping is defined as the process of making groups of tens when carrying out operations like addition and subtraction with two-digit numbers or larger numbers. So the subtraction of 90 -88 is 2.

Go through the Math in Focus Grade 1 Workbook Answer Key Cumulative Review for Chapters 18 and 19 to finish your assignments.

Math in Focus Grade 1 Cumulative Review for Chapters 18 and 19 Answer Key

Concepts and Skills

Count the number of groups. Count the number in each group. Then fill in the blanks.

Question 1.

6 + 6 + 6 + 6 = ___________
4 sixes = ___________
There are __________ starfishes in all.
Answer:
6 + 6 + 6 + 6 = 24
4 sixes = 24
There are 24 starfishes in all.
Explanation:
Count the number of groups.
Then count the number of star fish in each group.
Add 6+6+6+6 = 24
4 x 6 = 24

Question 2.

4 + 4 + 4 + 4 = ___________
4 fours = ___________
There are ___________ shrimps in all.
Answer:
4 + 4 + 4 + 4 = 16
4 fours = 16
There are 16 shrimps in all
Explanation:
Count the number of groups.
Add 4+4+4+4 = 16
Then count the number of shrimps in each group.
4 x 4 = 16

Look at the pictures. Then fill in the blanks.

Question 3.

___________ + ___________ + ___________ + ___________ = ___________
___________ fives = ___________
Answer:
5 + 5 + 5 + 5 = 20
4 fives = 20
There are 20 cherries in all
Explanation:
Count the number of groups.
Then count the number of shrimps in each group.
Add 4+4+4 = 16
4 x 4 = 16

Question 4.

There are ___________ pineapple cubes in all.
There are _________ sticks.
There are ___________ pineapple cubes in each stick.
Answer:
There are 18 pineapple cubes in all.
There are 6 sticks.
There are 3 pineapple cubes in each stick.
Explanation:
Count the number of sticks.
Then count the number of pineapples in each stick.
Add 3+3+3+3+3+3 = 18
3 x 6 = 18

Solve.

Question 5.
There are 12 sandwiches. They are shared equally by 3 children.

Each child gets ___________ sandwiches.
Answer:
Each child gets 4 sandwiches.
Explanation:

There are 12 sandwiches.
They are shared equally by 3 children.
4+4+4 = 12
3 x 4 = 12

Solve.

Question 6.
There are 16 toy soldiers. Jamal packs them equally into 4 boxes.

There are ___________ toy soldiers in each box.
Answer:
There are 4 toy soldiers in each box.

Explanation:
There are 16 toy soldiers.
Jamal packs them equally into 4 boxes
4+4+4+4 = 16
4 x 4 = 16

Question 7.
Timmy puts 6 pillows equally into 3 groups.

Each group has ____________ pillows.
Answer:
Each group has 2 pillows

Explanation:
Timmy puts 6 pillows equally into 3 groups.
Count the number of groups.
Then count the number of shrimps in each group.
Add 2+2+2 = 6
3 x 2 = 6

Question 8.
There are 9 oranges. Circle groups of 3.

There are ____________ groups of 3.
Answer:
There are 3 groups of 3.

Explanation:
Count the number of groups.
Then count the number of shrimps in each group.
Add 3+3+3 = 9
3 x 3 = 9

Look at the pictures. Then fill in the blanks.

Maria has 12 flowers.

Question 9.
She puts the flowers equally into 3 vases. There are flowers ____________ in each vase.
Answer:
There are flowers 4 in each vase.

Explanation:
Count the number of groups.
Then count the number of shrimps in each group.
Add 4+4+4 = 12
3 x 4 = 12

Question 10.
She puts 2 flowers in each vase. She needs ____________ vases.
Answer:
She needs 6 vases.

Explanation:
Count the number of groups.
Then count the number of shrimps in each group.
Add  2+2+2+2+2+2 = 12
6 x 2 = 12

Question 11.
She puts 4 flowers in each vase. She needs ____________ vases.
Answer:
She needs 3 vases.

Explanation:
Count the number of groups.
Then count the number of shrimps in each group.
Add 4+4+4 = 12
3 x 4 = 12

Write the value.

Question 12.

Answer: 5¢
Explanation:
1 nickel = 5¢

Question 13.

Answer:
3 dimes = 30¢
Explanation:
1 dime = 10¢
3 dimes = 10¢ + 10¢ + 10¢ = 30¢

Fill in the blanks.

Question 14.
Find how many of each coin are needed.

__________ dimes _________ nickels _________ pennies
Answer:
2 dimes + 1 nickel + 2 pennies.
Explanation:
1 dime = 10¢
1 nickel = 5¢
1 penny = 1¢
2 dimes + 1 nickel + 2 pennies
20¢ + 5¢ + 2¢ = 17¢

Question 15.

Answer:
5 nickels
Explanation:
1 quarter = 25¢
1 nickel = 5¢
1 quarter = 5 nickels.

Circle the coins to show the same value.

Question 16.

Answer:

Explanation:
1 quarter = 2 dimes + 1 nickel
1 quarter = 25¢
1 dime = 10¢
1 nickel = 5¢

Circle the coins that are not dimes.

Question 17.

Answer:

Explanation:
3 coins belongs to dimes,
rest of the coins are quarters, nickels and pennies.

Count on to find the value.

Question 18.

Answer: 81¢
Explanation:
2 quarters + 3 dimes + 1 penny = 81¢
1 quarter = 25¢
1 dime = 10¢
1 penny = 1¢

Add.

Question 19.

25¢ + 17¢ = ____________ ¢
Answer: 42¢
Explanation:
1 quarter + 1 dime + 1 nickel + 2 pennies
1 quarter = 25¢
1 dime = 10¢
1 nickel = 5¢
1 penny = 1¢
25¢ + 10¢ + 5¢ + 2¢ = 42¢

Complete.

Question 20.

45¢ – 15¢ = ____________ ¢
Answer: 33¢
Explanation:
1 quarter = 25¢
1 dimes = 10¢
1 nickel = 5¢
(1 quarter + 2 dimes) – (1 dime + 1 nickel)
= (25 + 20) – (10 + 5)
= 45 – 15 = 30

Question 21.
Subtract 18¢ from 90¢
__________ – _________ = _________ ¢
Answer: 72¢
Explanation:
Subtract small number form big number
90¢ – 18¢ = 72¢

Problem Solving

Solve.

Question 22.
Draw the least number of coins needed to make 64¢.
Answer: 64 ¢

Explanation:
1 quarter = 25 ¢
1 dime = 10¢
1 penny = 1¢
2 quarter + 1 dime + 4 pennies =64¢

Practice the problems of Math in Focus Grade 3 Workbook Answer Key Chapter 10 Practice 5 Subtraction to score better marks in the exam.

Math in Focus Grade 3 Chapter 10 Practice 5 Answer Key Subtraction

Complete each number bond. Then subtract.

Example

Question 1.

So, $2.45 – $0.70 = $ ______________
Answer:

So, $2.45 – $0.70 = $1.75
Explanation:
To make $0.70 to the nearest integer we have to add required ¢ to the $0.70.
A number bond is a simple addition of two numbers that add up to give the sum. Add these two numbers 70¢ and 30¢ the sum is $1.
In place of $0.70 we have to use $1. Subtract $1 from $2.45 the difference is $1.45.
The 30¢ which are added to the given number $0.70 to make nearest integer are added to the above difference.
Add $1.45 with 30¢ the sum is $1.75.

Question 2.

So, $4.55 – $0.65 = $ ______________
Answer:

So, $4.55 – $0.65 = $3.90
Explanation:
To make $0.65 to the nearest integer we have to add required ¢ to the $0.65.
A number bond is a simple addition of two numbers that add up to give the sum. Add these two numbers 65¢ and 35¢ the sum is $1.
In place of $0.65 we have to use $1. Subtract $1 from $4.55 the difference is $3.55.
The 35¢ which are added to the given number $0.65 to make nearest integer are added to the above difference.
Add $3.55 with 35¢ the sum is $3.90.

Question 3.

So, $3.70 – $0.75 = $ ______________
Answer:

So, $3.70 – $0.75 = $2.95
Explanation:
To make $0.75 to the nearest integer we have to add required ¢ to the $0.75.
A number bond is a simple addition of two numbers that add up to give the sum. Add these two numbers 75¢ and 25¢ the sum is $1.
In place of $0.75 we have to use $1. Subtract $1 from $3.70 the difference is $2.70.
The 25¢ which are added to the given number $0.75 to make nearest integer are added to the above difference.
Add $2.70 with 25¢ the sum is $2.95.

Complete each number bond. Then subtract.

Example

Question 4.

So, $7.25 – $4.50 = $___________
Answer:

So, $7.25 – $4.50 = $2.75
Explanation:
To make $4.50 to the nearest integer we have to add required ¢ to the $4.50.
A number bond is a simple addition of two numbers that add up to give the sum. Add these two numbers $4.50 and 50¢ the sum is $5.
In place of $4.50 we have to use $5. Subtract $5 from $7.25 the difference is $2.25.
The 50¢ which are added to the given number $4.50 to make nearest integer are added to the above difference.
Add $2.25 with 50¢ the sum is $2.75.

Question 5.

So, $9.80 – $1.95 = $____________
Answer:

So, $9.80 – $1.95 = $7.85
Explanation:
To make $1.95 to the nearest integer we have to add required ¢ to the $1.95.
A number bond is a simple addition of two numbers that add up to give the sum. Add these two numbers $1.95 and 5¢ the sum is $2.
In place of $1.95 we have to use $2. Subtract $2 from $9.80 the difference is $7.80.
The 5¢ which are added to the given number $1.95 to make nearest integer are added to the above difference.
Add $7.80 with 5¢ the sum is $7.85.

Question 6.

So, $12.60 – $2.80 = $___________
Answer:

So, $12.60 – $2.80 = $9.80
Explanation:
To make $2.80 to the nearest integer we have to add required ¢ to the $2.80.
A number bond is a simple addition of two numbers that add up to give the sum. Add these two numbers $2.80 and 20¢ the sum is $3.
In place of $2.80 we have to use $3. Subtract $3 from $12.60 the difference is $9.60.
The 20¢ which are added to the given number $2.80 to make nearest integer are added to the above difference.
Add $9.60 with 20¢ the sum is $9.80.