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

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.

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 = ____
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 = ____
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 = ____
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 = ____
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

Question 5.
3 + 9 = ____
12 – 9 = ___
12 – 3 = ____
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 = ___
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.

Explanation:
The sum of 8 and 9 is 17
The difference of 17 and 8 is 9

Question 8.

Explanation:
The sum of 9 and 6 is 15
The difference of 15 and 9 is 6

Question 9.

Explanation:
The sum of 9 and 5 is 14
The difference of 14 and 5 is 9

Question 10.

Explanation:
The sum of 8 and 4 is 12
The difference of 12 and 8 is 4

Question 11.

Explanation:
The sum of 8 and 7 is 15
The difference of 15 and 7 is 8

Question 12.

Explanation:
The sum of 8 and 5 is 13
The difference of 13 and 8 is 5

Question 13.
8 + 9 = ___
17 – 8 = ___
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 = ___
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 = ___
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 = ___
3 + 8 = 11
11 – 8 = 3
Explanation:
The sum of 3 and 8 is 11
The difference of 11 and 8Â  is 3

Question 17.
8 + 8 = ___
16 – 8 = ___
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 = ___
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. ____ ____ _____
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. _____ ___ ____
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. ____ ____ _____
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

Question 1.
7 + 5 = ____
12 – 5 = _____
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 = ____
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 = ____
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 = ____
4 + 7 = 11
11 – 7 = 4
Explanation:
The sum of 4 and 7 is 11
The difference of 11 and 7 is 4

Question 5.

Explanation:
The sum of 7 and 3 is 10
The difference of 10 and 3 is 7

Question 6.

Explanation:
The sum of 4 and 0 is 4
The difference of 4 and 0 is 4

Question 7.

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

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.
___ _____ _____
___ _____ _____
___ _____ _____
___ _____ _____