All the solutions provided in **McGraw Hill My Math Grade 1 Answer Key PDF Chapter 1 Lesson 12 Find Missing Parts of 10 **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 1 Answer Key Chapter 1 Lesson 12 Find Missing Parts of 10

**Explore and Explain**

Explanation:

Explanation:

The sum of 8 and 2 is 10.

8 + 2 = 10

**Teacher Directions:** Use to model. There are 10 frogs in all. 8 of the frogs are in the pond. The rest are in the grass. How many frogs are in the grass? Write the missing part.

**See and Show**

The whole is 10. One part is 3. What is the other part?

3 + __7 = 10__Explanation:

__The sum of 3 and 7 is 10.__

**Use Work Mat 3 and . Find the missing part of 10. Write the number.**

Question 1.

Answer:

Explanation:

The sum of 4 and 6 is 10

4 + 6 = 10

Question 2.

Answer:

Explanation:

The sum of 5 and 5 is 10

5 + 5 = 10

**Talk Math** You know one of the parts and the whole, how do you find the other part?

**On My Own**

**Use Work Mat 3 and . Find the missing part of 10. Write the number.**

Question 3.

Answer:

Explanation:

The sum of 7 and 3 is 10

7 + 3 = 10

Question 4.

Answer:

Explanation:

The sum of 5 and 5 is 10

5 + 5 = 10

Question 5.

Answer:

Explanation:

The sum of 2 and 8 is 10

2 + 8 = 10

Question 6.

Answer:

Explanation:

The sum of 1 and 9 is 10

1 + 9 = 10

Question 7.

Answer:

Explanation:

The sum of 3 and 7 is 10.

3 + 7 = 10

Question 8.

Answer:

Explanation:

The sum of 4 and 6 is 10

4 + 6 = 10

**Problem Solving**

Question 9.

There are 10 apples. 3 of the apples are green. The rest of the apples are red. How many apples are red?

_____ apples

Answer:

7 apples

Explanation:

There are 10 apples.

3 of the apples are green.

10 – 3 = 7

7 + 3 = 10

Question 10.

Javier has 10 leaves. 2 of the leaves are orange. The rest are yellow. How many yellow leaves does he have?

_____ leaves

Answer:

8 leaves

Explanation:

Javier has 10 leaves.

2 of the leaves are orange.

2 + 8 = 10

8 leaves are yellow.

**HOT Problem** Angelo wrote the missing part. Tell why Angelo is wrong. Make it right.

_____________________________

_____________________________

_____________________________

_____________________________

Explanation:

3 + 7 = 10

The sum of 2 and 7 is 9

so, the Angelo was wrong.

### McGraw Hill My Math Grade 1 Chapter 1 Lesson 12 My Homework Answer Key

**Practice**

**Find the missing part of 10. Write the number.**

Question 1.

Answer:

Explanation:

The sum of 3 and 7 is 10

3 + 7 = 10

Question 2.

Answer:

Explanation:

The sum of 5 and 5 is 10

5 + 5 = 10

**Find the missing part of 10. Write the number.**

Question 3.

Answer:

Explanation:

The sum of 6 and 4 is 10

6 + 4 = 10

Question 4.

Answer:

Explanation:

The sum of 9 and 1 is 10.

9 + 1 = 10

Question 5.

Amaya sees 10 bugs on a log. 8 of them are black. The rest of the bugs are red. How many bugs are red?

____ bugs

Answer:

2 bugs

Explanation:

Amaya sees 10 bugs on a log.

8 of them are black.

8 + 2 = 10

so, 2 bugs are red

**Test Practice**

Question 6.

Carter sees 10 eagles. 5 of the eagles are flying. The rest of the eagles are in their nest. How many eagles are in their nest?

(A) 15 eagles

(B) 9 eagles

(C) 10 eagles

(D) 5 eagles

Answer:

D

Explanation:

Carter sees 10 eagles.

5 of the eagles are flying.

5 + 5 = 10

so, 5 eagles are in the nest.

**Math at Home** Create number cards with the numbers 0 to 10 on them. Show one number card. Have your child find the other number card that shows the number needed to make 10.