Spectrum Math Grade 1 Chapter 1 Lesson 17 Answer Key Fact Families 7 Through 10

Practice with the help of Spectrum Math Grade 1 Answer Key Chapter 1 Lesson 1.17 Fact Families 7 Through 10 regularly and improve your accuracy in solving questions.

Spectrum Math Grade 1 Chapter 1 Lesson 1.17 Fact Families 7 Through 10 Answers Key

1.

Explanation:
4 + 5 = 9.
Adding 4 and 5, we get the sum 9.
5 + 4 = 9.
Adding 5 and 4, we get the sum 9.
9 – 4 = 5.
Subtraction of 9 and 4, we get the difference 5.
9 – 5 = 4.
Subtraction of 9 and 5, we get the difference 4.

2.

Explanation:
3 + 7 = 10.
Adding 3 and 7, we get the sum 10.
7 + 3 = 10.
Adding 7 and 3, we get the sum 10.
10 – 3 = 7.
Subtraction of 10 and 3, we get the difference 7.
10 – 7 = 3.
Subtraction of 10 and 7, we get the difference 3.

3.

Explanation:
5 + 2 = 7.
Adding 5 and 2, we get the sum 7.
2 + 5 = 7.
Adding 2 and 5, we get the sum 7.
7 – 5 = 2.
Subtraction of 7 and 5, we get the difference 2.
7 – 2 = 5.
Subtraction of 7 and 2, we get the difference 5.

4.

Explanation:
6 + 3 = 9.
Adding 6 and 3, we get the sum 9.
3 + 6 = 9.
Adding 3 and 6, we get the sum 9.
9 – 6 = 3.
Subtraction of 9 and 6, we get the difference 3.
9 – 3 = 6.
Subtraction of 9 and 3, we get the difference 6.

5.

Explanation:
1 + 7 = 8.
Adding 1 and 7, we get the sum 8.
7 + 1 = 8.
Adding 7 and 1, we get the sum 8.
8 – 1 = 7.
Subtraction of 8 and 1, we get the difference 7.
8 – 7 = 1.
Subtraction of 8 and 7, we get the difference 1.

6.

Explanation:
5 + 5 = 10.
Adding 5 and 5, we get the sum 10.
10 – 5 = 5.
Subtraction of 10 and 5, we get the difference 5.

7.

Explanation:
4 + 3 = 7.
Adding 4 and 3, we get the sum 7.
3 + 4 = 7.
Adding 3 and 4, we get the sum 7.
7 – 4 = 3.
Subtraction of 7 and 4, we get the difference 3.
7 – 3 = 4.
Subtraction of 7 and 3, we get the difference 4.

8.

Explanation:
2 + 6 = 8.
Adding 4 and 5, we get the sum 8.
6 + 2 = 8.
Adding 6 and 2, we get the sum 8.
8 – 2 = 6.
Subtraction of 8 and 2, we get the difference 6.
8 – 6 = 2.
Subtraction of 8 and 6, we get the difference 2.

9.

Explanation:
4 + 6 = 10.
Adding 4 and 6, we get the sum 10.
6 + 4 = 10.
Adding 6 and 4, we get the sum 10.
10 – 6 = 4.
Subtraction of 10 and 6, we get the difference 4.
10 – 4 = 6.
Subtraction of 10 and 4, we get the difference 6.

10.

Explanation:
4 + 4 = 8.
Adding 4 and 4, we get the sum 8.
8 – 4 = 4.
Subtraction of 8 and 4, we get the difference 4.

11.

Explanation:
2 + 7 = 9.
Adding 2 and 7, we get the sum 9.
7 + 2 = 9.
Adding 7 and 2, we get the sum 9.
9 – 2 = 7.
Subtraction of 9 and 2, we get the difference 7.
9 – 7 = 2.
Subtraction of 9 and 7, we get the difference 2.

12.

Explanation:
8 + 2 = 10.
Adding 8 and 2, we get the sum 10.
2 + 8 = 10.
Adding 2 and 8, we get the sum 10.
10 – 2 = 8.
Subtraction of 10 and 2, we get the difference 8.
10 – 8 = 2.
Subtraction of 10 and 8, we get the difference 2.

13.

Explanation:
5 + 3 = 8.
Adding 5 and 3, we get the sum 8.
3 + 5 = 8.
Adding 3 and 5, we get the sum 8.
8 – 5 = 3.
Subtraction of 8 and 5, we get the difference 3.
8 – 3 = 5.
Subtraction of 8 and 3, we get the difference 5.

14.

Explanation:
1 + 6 = 7.
Adding 1 and 6, we get the sum 7.
6 + 1 = 7.
Adding 6 and 1, we get the sum 7.
7 – 1 = 6.
Subtraction of 7 and 1, we get the difference 6.
7 – 6 = 1.
Subtraction of 7 and 6, we get the difference 1.

15.

Explanation:
8 + 1 = 9.
Adding 8 and 1, we get the sum 9.
1 + 8 = 9.
Adding 1 and 8, we get the sum 9.
9 – 1 = 8.
Subtraction of 9 and 1, we get the difference 8.
9 – 8 = 1.
Subtraction of 9 and 8, we get the difference 1.

16.