Fact Families Addition & Subtraction Worksheet With Answer Key Page 20
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20Answer Key
Name:
Fact Families (Addition & Subtraction)
Fill in the missing fact from the fact family.
A n s w e r s
Ex)
13 - 6 = 7
1)
17 - 10 = 7
2)
8 + 1 = 9
13 - 7 = 6
Ex.
7 + 6 = 13
17 - 7 = 10
9 - 8 = 1
6 + 7 = 13
7 + 10 = 17
1 + 8 = 9
10 + 7 = 17
1.
13 - 7 = 6
?
?
9 - 1 = 8
2.
8 + 10 = 18
3.
3)
4)
5)
18 - 8 = 10
3 - 2 = 1
9 + 7 = 16
2 + 1 = 3
18 - 10 = 8
3 - 1 = 2
16 - 9 = 7
4.
10 + 8 = 18
1 + 2 = 3
16 - 7 = 9
7 + 9 = 16
5.
?
?
?
4 + 10 = 14
6.
10 - 1 = 9
7.
6)
14 - 4 = 10
7)
9 + 1 = 10
8)
1 + 1 = 2
2 - 1 = 1
10 + 4 = 14
10 - 9 = 1
1 + 1 = 2
8.
14 - 10 = 4
1 + 9 = 10
2 - 1 = 1
3 + 1 = 4
?
?
?
9.
1 + 6 = 7
10.
15 - 5 = 10
11.
9)
10)
11)
4 - 1 = 3
7 - 1 = 6
10 + 5 = 15
4 - 3 = 1
7 - 6 = 1
5 + 10 = 15
8 + 7 = 15
12.
1 + 3 = 4
6 + 1 = 7
15 - 10 = 5
?
?
?
7 + 5 = 12
13.
5 - 4 = 1
14.
12)
15 - 8 = 7
13)
12 - 7 = 5
14)
4 + 1 = 5
7 + 8 = 15
12 - 5 = 7
5 - 1 = 4
15 - 7 = 8
5 + 7 = 12
1 + 4 = 5
?
?
?
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