This handy Math in Focus Grade 1 Workbook Answer Key Chapter 3 Addition Facts to 10 detailed solutions for the textbook questions.
Math in Focus Grade 1 Chapter 3 Answer Key Addition Facts to 10
Math Journal
Write your own addition story. Use the helping words.
Explanation:
Framed a question by using the given vocabulary
and formed an equation based on the story.
Put on your Thinking Cap!
Challenging Practice
Solve.
Ivy and Reena have 10 prizes in all. They do not have the same number of prizes. How many prizes can Reena have?
Reena can have ___ prizes.
Put on Your Thinking Cap!
Problem Solving
Solve.
Answer:
Ivy and Reena have 10 prizes in all. They do not have the same number of prizes.
so, 6 and 4 let us assume
6 + 4 = 10
Reena can have 6 prizes.
Lilian has these candles. Help her choose the correct number candle for her friend’s birthday.
- Cross out two numbers that add up to 5.
- Cross out two numbers that add up to 10.
- Look at the two numbers that are left.
Cross out the number that is the least.
The correct number candle is ____
Answer:
The correct number candle is 7
Explanation:
2 + 3 = 5
so, crossed 2 and 3
6 + 4 = 10
so, crossed 6 and 4
remaining are 5 and 7
In that least is 5 so crossed that
remaining is 7
Chapter Review/Test
Vocabulary
Choose the correct word.
Question 1.
You can ____ by counting on from the greater number.
Answer:
Add
Explanation:
You can add by counting on from the greater number.
Question 2.
2 + 3 = 5 is an ____
Answer:
Addition sentence
Explanation:
An addition sentence is a number sentence or simply an equation used to express addition.
Question 3.
3 plus 4 is ____ 7.
Answer:
Equal to
Explanation:
3 + 4 = 7
The sum of 3 and 4 is 7
Question 4.
“+” is read as ____
Answer:
plus
Explanation:
The addition is represented with + symbol
Question 5.
6 is 2 ___ 4.
Answer:
more than
Explanation:
6 is 2 more than 4.
4 + 2 = 6
Concepts and Skills
Add by counting on from the greater number.
Question 6.
3 + 6 = ___
Answer:
9
Explanation:
The sum of 3a nd 6 is 9
Question 7.
7 + 1 = ____.
Answer:
8
Explanation:
7 + 1 = 8
The sum of 7 and 1 is 8
Question 8.
2 + 8 = ___
Answer:
10
Explanation:
2 + 8 = 10
The sum of 2 and 8 is 10
Question 9.
1 + 9 = ___
Answer:
10
Explanation:
The sum of 1 and 9 is 10
1 + 9 = 10
Fill in the blanks.
Question 10.
____ is 3 more than 6.
Answer:
9
Explanation:
9 is 3 more than 6.
6 + 3 = 9
Question 11.
____ is 2 more than 5.
Answer:
7
Explanation:
7 is 2 more than 5.
5 + 2 = 7
Question 12.
___ is 4 more than 4.
Answer:
8
Explanation:
8 is 4 more than 4.
Look at the pictures. Fill in the blanks.
Question 13.
Answer:
Explanation:
An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.
Complete the number bonds. Fill in the blanks.
Question 14.
Answer:
Explanation:
An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.
Problem Solving
Solve.
Question 15.
Carlos has 3 brown belts. He has 2 black belts. How many belts does he have in all?
3 + 2 = ___
Carlos has ___ belts in all.
Answer:
3 + 2 = 5
Carlos has 5 belts in all.
Explanation:
Carlos has 3 brown belts. He has 2 black belts.
3 + 2 = 5
An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.
Question 16.
Jane has 4 bows. She gets 3 more bows. How many bows does she have now?
4 + 3 = ___
Jane has __ bows now.
Answer:
4 + 3 = 7
Jane has 7 bows now.
Explanation:
Jane has 4 bows. She gets 3 more bows.
4 + 3 = 7
An addition fact is the sum of two specific addends that will always equal the same result. 2 + 2 will always equal four. 7 + 8 will always equal 15.
Draw
Then Solve.
Question 17.
How many toys are there ¡n all?
3 + _____ = _____
There are ___ toys in all.
Answer:
Explanation:
5 + 3 = 8
There are 3 duck toys and 5 teddy toys
The are 8 toys in all
Look at the in question 17 to answer the questions.
Circle the correct answer.
Question 18.
a.
Answer:
Teddys
Explanation:
There are 3 duck toys and 5 teddy toys
5 > 3
so, teddy are more
b. How many more?
5 is more than 3.
Answer:
5 – 3 = 2
2 more.
Explanation:
There are 3 duck toys and 5 teddy toys
there are 2 more teddy than duck.