Adding Doubles Strategy (I) Single Digit Worksheet With Answer Key Page 2
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2Adding Doubles Strategy (I) Answers
Use an adding doubles strategy to find each sum
Example: 9 + 10 = 9 + 9 + 1 = 18 + 1 = 19
3 + 5 =
7 + 8 =
4 + 5 =
3 + 3 + 2 = 8
7 + 7 + 1 = 15
4 + 4 + 1 = 9
6 + 2 = 8
14 + 1 = 15
8 + 1 = 9
9 + 11 =
10 + 8 =
9 + 8 =
9 + 9 + 2 = 20
10 + 10 - 2 = 18
9 + 9 - 1 = 17
18 + 2 = 20
20 - 2 = 18
18 - 1 = 17
0 + 0 =
6 + 8 =
7 + 7 =
0 + 0 = 0
6 + 6 + 2 = 14
7 + 7 = 14
12 + 2 = 14
5 + 6 =
11 + 9 =
3 + 2 =
5 + 5 + 1 = 11
11 + 11 - 2 = 20
3 + 3 - 1 = 5
10 + 1 = 11
22 - 2 = 20
6 - 1 = 5
6 + 6 =
2 + 0 =
6 + 6 =
6 + 6 = 12
2 + 2 - 2 = 2
6 + 6 = 12
4 - 2 = 2
8 + 7 =
2 + 4 =
5 + 5 =
8 + 8 - 1 = 15
2 + 2 + 2 = 6
5 + 5 = 10
16 - 1 = 15
4 + 2 = 6
2 + 1 =
4 + 5 =
2 + 0 =
2 + 2 - 1 = 3
4 + 4 + 1 = 9
2 + 2 - 2 = 2
4 - 1 = 3
8 + 1 = 9
4 - 2 = 2
2 + 4 =
3 + 3 =
2 + 1 =
2 + 2 + 2 = 6
3 + 3 = 6
2 + 2 - 1 = 3
4 + 2 = 6
4 - 1 = 3
4 + 4 =
1 + 3 =
9 + 9 =
4 + 4 = 8
1 + 1 + 2 = 4
9 + 9 = 18
2 + 2 = 4
8 + 9 =
5 + 7 =
3 + 4 =
8 + 8 + 1 = 17
5 + 5 + 2 = 12
3 + 3 + 1 = 7
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