## Envision Math 2nd Grade Textbook Answer Key Topic 2.7 Making 10 to Add 8

Question 1.

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Question 2.

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Question 3.

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Question 4.

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**Home Connection** Your child learned to make 10 to help add with 8.

**Home Activity** Have your child use pennies to make a group of 8 and a group of 6. Ask your child to show you how to make a group of 10 pennies to help find the sum.

AF 1.1, Grade 1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction. Also AF 1.0.

**Guided Practice**

Make 10 to add 8.

Use counters and your workmat

Question 1.

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Question 2.

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Do you understand? Why do you move 2 counters when making 10 to add 8?

**Independent Practice**

Make 10 to add 8.

Use counters and your workmat.

Question 3.

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Question 4.

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Question 5.

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Question 6.

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Question 7.

5 + 8 = ___

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Question 8.

2 + 8 = ___

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Question 9.

4 + 8 = ___

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Question 10.

8 + 9 = ___

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Question 11.

8 + 7 = ___

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Question 12.

8 + 8 = ___

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**Number Sense**

Write the missing number.

Question 13.

8 + 5 = + 3

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Question 14.

6 + 8 = 10 +

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**Problem Solving**

Solve the problems below.

Question 15.

Jordan picks 8 flowers. Cho picks 2 flowers. How many flowers do Jordan and Cho pick in all?

____ flowers

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Question 16.

Gina has 8 pencils at school. She has 4 pencils at home. How many pencils does Gina have in all?

____ pencils

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Question 17.

Boris saw 3 bugs on a leaf. He saw 8 bugs on another leaf. How many bugs did Boris see in all?

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Question 18.

Journal Write an addition story about 8 + 7. Show how to solve the story by making 10. Use pictures, numbers, or words.

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