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¢