All the solutions provided in **McGraw Hill Math Grade 2 Answer Key PDF Chapter 1 Lesson 10 Relate Addition and Subtraction** will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 1 Lesson 10 Relate Addition and Subtraction

**Explore and Explain**

**Teacher Directions:** Place 4 red counters in one part. Place 3 yellow counters in another part. Move the counters to the whole to show the total. Write the addition sentence. Move the yellow counters back to the part. Write the subtraction sentence shown.

Answer:

Explanation:

4 red counters and 3 yellow counters

4 + 3 = 7

**See and Show**

You can use addition facts to subtract. Related facts have the same three numbers

**Use the addition facts to subtract.**

Question 1.

6 + 7 = ____

13 – 6 = ____

13 – 7 = ____

Answer:

6 + 7 = 13

13 – 6 = 7

13 – 7 =6

Explanation:

The sum of 6 and 7 is 13

The difference of 13 and 6 is 7

The difference of 13 and 7 is 6

Question 2.

5 + 7 = ___

12 – 7 = ___

12 – 5 = ____

Answer:

5 + 7 = 12

12 – 7 = 5

12 – 5 = 7

Explanation:

The sum of 5 and 7 is 12

The difference of 12 and 7 is 5

The difference of 12 and 5 is 7

Question 3.

5 + 6 = ___

11 – 6 = ____

11 – 5 = ____

Answer:

5 + 6 = 11

11 – 6 = 5

11 – 5 = 6

Explanation:

The sum of 5 and 6 is 11

The difference of 11 and 6 is 5

The difference of 11 and 5 is 6

Question 4.

7 + 4 = ____

11 – 4 = ____

11 – 7 = ____

Answer:

7 + 4 = 11

11 – 4 = 7

11 – 7 = 4

Explanation:

The sum of 7 and 4 is 11

The difference of 11 and 4 is 7

The difference of 11 and 7 is 4

**Talk Math** Explain how addition are related.

**On My Own**

**Use addition facts to subtract.**

Question 5.

3 + 9 = ____

12 – 9 = ___

12 – 3 = ____

Answer:

3 + 9 = 12

12 – 9 = 3

12 – 3 = 9

Explanation:

The sum of 3 and 9 is 12

The difference of 12 and 9 is 3

The difference of 12 and 3 is 9

Question 6.

4 + 7 = ___

11 – 4 = ___

11 – 7 = ___

Answer:

4 + 7 = 11

11 – 4 = 7

11 – 7 = 4

Explanation:

The sum of 11 and 4 is 7

The difference of 11 and 4 is 7

The difference of 11 and 7 is 4

Question 7.

Answer:

Explanation:

The sum of 8 and 9 is 17

The difference of 17 and 8 is 9

Question 8.

Answer:

Explanation:

The sum of 9 and 6 is 15

The difference of 15 and 9 is 6

Question 9.

Answer:

Explanation:

The sum of 9 and 5 is 14

The difference of 14 and 5 is 9

Question 10.

Answer:

Explanation:

The sum of 8 and 4 is 12

The difference of 12 and 8 is 4

Question 11.

Answer:

Explanation:

The sum of 8 and 7 is 15

The difference of 15 and 7 is 8

Question 12.

Answer:

Explanation:

The sum of 8 and 5 is 13

The difference of 13 and 8 is 5

Question 13.

8 + 9 = ___

17 – 8 = ___

Answer:

8 + 9 = 17

17 – 8 = 9

Explanation:

The sum of 8 and 9 is 17

The difference of 17 and 8 is 9

Question 14.

6 + 8 = ___

14 – 6 = ___

Answer:

6 + 8 = 14

14 – 6 = 8

Explanation:

The sum of 6 and 8 is 14

The difference of 14 and 6 is 8

Question 15.

6 + 7 = ___

13 – 6 = ___

Answer:

6 + 7 = 13

13 – 6 = 7

Explanation:

The sum of 6 and 7 is 13

The difference of 13 and 6 is 7

Question 16.

3 + 8 = ____

11 – 8 = ___

Answer:

3 + 8 = 11

11 – 8 = 3

Explanation:

The sum of 3 and 8 is 11

The difference of 11 and 8 is 3

Question 17.

8 + 8 = ___

16 – 8 = ___

Answer:

8 + 8 = 16

16 – 8 = 8

Explanation:

The sum of 8 and 8 is 16

The difference of 16 and 8 is 8

Question 18.

5 + 5 = ___

10 – 5 = ___

Answer:

5 + 5 = 10

10 – 5 = 5

Explanation:

The sum of 5 and 5 is 10

The difference of 10 and 5 is 5

**Problem Solving**

Question 19.

The tennis team has 16 players. 8 players leave the team. How many players are still on the team?

____ players

Write a related fact. ____ ____ _____

Answer:

16 – 8 = 8

Explanation:

The tennis team has 16 players.

8 players leave the team.

16 – 8 = 8

8 players are still on the team

Question 20.

10 turtles are on a log. 2 turtles jump in the water and swim away. How many turtles are left on the log?

____ turtles

Write a related fact. _____ ___ ____

Answer:

8 turtles

Explanation:

10 turtles are on a log.

2 turtles jump in the water and swim away.

10 – 2 = 8

8 turtles are left on the log

Question 21.

9 birds are flying. 3 birds fly away. How many birds are left flying?

______ birds

Write a related fact. ____ ____ _____

Answer:

9 – 3 = 6

Explanation:

9 birds are flying.

3 birds fly away.

9 – 3 = 6

6 birds are left flying

**Write Math** Write an example of related facts. Use the numbers 4, 6, and 10.

### McGraw Hill My Math Grade 2 Chapter 1 Lesson 10 My Homework Answer Key

**Practice**

**Use addition facts to subtract.**

Question 1.

7 + 5 = ____

12 – 5 = _____

Answer:

7 + 5 = 12

12 – 5 = 7

Explanation:

The sum of 7 and 5 is 12

The difference of 12 and 5 is 7

Question 2.

6 + 9 = ____

15 – 9 = ____

Answer:

6 + 9 = 15

15 – 9 = 6

Explanation:

The sum of 6 and 9 is 15

The difference of 15 and 9 is 6

Question 3.

8 + 5 = ____

13 – 5 = ____

Answer:

8 + 5 = 13

13 – 5 = 8

Explanation:

The sum of 8 and 5 is 13

The difference of 13 and 5 is 8

Question 4.

4 + 7 = ___

11 – 7 = ____

Answer:

4 + 7 = 11

11 – 7 = 4

Explanation:

The sum of 4 and 7 is 11

The difference of 11 and 7 is 4

**Use addition facts to subtract.**

Question 5.

Answer:

Explanation:

The sum of 7 and 3 is 10

The difference of 10 and 3 is 7

Question 6.

Answer:

Explanation:

The sum of 4 and 0 is 4

The difference of 4 and 0 is 4

Question 7.

Answer:

Explanation:

The sum of 2 and 8 is 10

The difference of 10 and 2 is 8

Question 8.

Megan sent 12 postcards last week. This week she sent 4 postcards. How many more postcards did she send last week?

______ postcards

Answer:

8 postcards

Explanation:

Megan sent 12 postcards last week.

This week she sent 4 postcards.

12 – 4 = 8

8 more postcards that she send last week

**Vocabulary Check**

Question 9.

Using 2, 4, and 6, write an example of related facts.

___ _____ _____

___ _____ _____

___ _____ _____

___ _____ _____

Answer:

2 + 4 = 6

4 + 2 = 8

4 + 6 = 10

6 + 4 = 10

6 + 2 = 8

2 + 6 = 8

Explanation:

If we change the Addends pattern also the pattern remains the sum as same.

**Math at Home** Ask your child to show you an addition sentence with spoons and relate it to subtraction.