Fact Families Addition & Subtraction Worksheet With Answer Key
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1
2
3Name:
Fact Families (Addition & Subtraction)
Determine which letter best represents the missing fact from the fact family.
A n s w e r s
1)
17 - 8 = 9
2)
11 - 8 = 3
3)
8 - 1 = 7
1.
17 - 9 = 8
3 + 8 = 11
7 + 1 = 8
8 + 9 = 17
8 + 3 = 11
8 - 7 = 1
2.
A. 9 + 9 = 18
A. 8 - 11 = 3
A. 1 - 8 = 7
B. 9 + 8 = 17
B. 11 + 8 = 19
B. 9 - 1 = 8
3.
C. 17 - 9 = 9
C. 4 + 8 = 12
C. 8 - 1 = 1
D. 8 + 17 = 9
D. 11 - 3 = 8
D. 1 + 7 = 8
4.
5.
4)
5)
6)
5 + 2 = 7
6 - 5 = 1
2 + 10 = 12
6.
2 + 5 = 7
5 + 1 = 6
12 - 10 = 2
7 - 2 = 5
6 - 1 = 5
12 - 2 = 10
7.
A. 7 - 5 = 5
A. 1 + 6 = 5
A. 12 - 2 = 2
B. 7 - 5 = 2
B. 5 - 6 = 1
B. 14 - 10 = 4
8.
C. 7 + 5 = 12
C. 1 + 5 = 6
C. 13 - 2 = 11
D. 8 - 5 = 3
D. 2 + 5 = 7
D. 10 + 2 = 12
9.
10.
7)
8)
9)
9 + 7 = 16
17 - 10 = 7
10 - 8 = 2
11.
7 + 9 = 16
7 + 10 = 17
10 - 2 = 8
16 - 7 = 9
10 + 7 = 17
8 + 2 = 10
12.
A. 17 - 9 = 8
A. 10 + 17 = 7
A. 18 - 2 = 16
B. 16 - 9 = 7
B. 11 + 7 = 18
B. 2 + 8 = 10
C. 25 - 7 = 18
C. 17 - 7 = 10
C. 8 - 10 = 2
D. 9 - 16 = 7
D. 17 - 7 = 7
D. 11 - 8 = 3
10)
5 + 3 = 8
11)
5 + 7 = 12
12)
2 + 3 = 5
8 - 3 = 5
7 + 5 = 12
5 - 2 = 3
3 + 5 = 8
12 - 5 = 7
3 + 2 = 5
A. 9 - 3 = 6
A. 12 - 7 = 7
A. 6 - 3 = 3
B. 8 - 5 = 3
B. 7 - 12 = 5
B. 2 + 5 = 3
C. 6 + 3 = 9
C. 12 + 7 = 19
C. 5 - 3 = 2
D. 8 + 3 = 11
D. 12 - 7 = 5
D. 3 + 3 = 6
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