Fact Families Addition & Subtraction Worksheet With Answer Key Page 3
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30Name:
Fact Families (Addition & Subtraction)
Determine which letter best represents the missing fact from the fact family.
A n s w e r s
1)
19 - 10 = 9
2)
12 - 3 = 9
3)
10 - 4 = 6
1.
19 - 9 = 10
9 + 3 = 12
10 - 6 = 4
10 + 9 = 19
12 - 9 = 3
6 + 4 = 10
2.
A. 19 - 10 = 10
A.
A.
B. 9 + 10 = 19
B. 3 + 9 = 12
B. 5 + 6 = 11
3.
C.
C. 9 - 12 = 3
C. 4 + 6 = 10
D.
D.
D.
4.
5.
4)
5)
6)
16 - 10 = 6
10 + 1 = 11
6 - 1 = 5
10 + 6 = 16
11 - 1 = 10
6 - 5 = 1
6.
16 - 6 = 10
1 + 10 = 11
1 + 5 = 6
7.
A. 17 - 6 = 11
A.
A.
B. 6 + 10 = 16
B. 11 - 10 = 1
B. 5 + 1 = 6
8.
C.
C.
C.
D.
D. 12 - 10 = 2
D. 6 + 1 = 7
9.
10.
7)
13 - 4 = 9
8)
10 + 8 = 18
9)
5 + 10 = 15
9 + 4 = 13
18 - 10 = 8
15 - 5 = 10
11.
4 + 9 = 13
18 - 8 = 10
10 + 5 = 15
A.
A. 18 + 10 = 28
A.
12.
B. 13 - 9 = 4
B. 8 + 10 = 18
B.
C.
C.
C. 15 - 10 = 5
D. 14 - 4 = 10
D.
D. 10 - 15 = 5
10)
11)
12)
6 - 4 = 2
4 - 1 = 3
5 + 7 = 12
6 - 2 = 4
3 + 1 = 4
12 - 7 = 5
4 + 2 = 6
1 + 3 = 4
12 - 5 = 7
A. 2 + 4 = 6
A. 4 - 3 = 1
A.
B.
B. 5 - 1 = 4
B.
C.
C.
C. 7 + 5 = 12
D. 8 - 4 = 4
D. 4 + 1 = 5
D. 7 - 12 = 5
Modified
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