Adding Doubles Strategy Worksheets With Answer Keys Page 2
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20Adding Doubles Strategy (A) Answers
Use an adding doubles strategy to find each sum
Example: 6 + 7 = 6 + 6 + 1 = 12 + 1 = 13
0 + 0 =
2 + 4 =
6 + 5 =
0 + 0 = 0
2 + 2 + 2 = 6
6 + 6 - 1 = 11
4 + 2 = 6
12 - 1 = 11
6 + 7 =
1 + 0 =
8 + 6 =
6 + 6 + 1 = 13
1 + 1 - 1 = 1
8 + 8 - 2 = 14
12 + 1 = 13
2 - 1 = 1
16 - 2 = 14
4 + 5 =
1 + 3 =
10 + 9 =
4 + 4 + 1 = 9
1 + 1 + 2 = 4
10 + 10 - 1 = 19
8 + 1 = 9
2 + 2 = 4
20 - 1 = 19
11 + 9 =
4 + 4 =
10 + 8 =
11 + 11 - 2 = 20
4 + 4 = 8
10 + 10 - 2 = 18
22 - 2 = 20
20 - 2 = 18
2 + 4 =
7 + 7 =
5 + 3 =
2 + 2 + 2 = 6
7 + 7 = 14
5 + 5 - 2 = 8
4 + 2 = 6
10 - 2 = 8
9 + 8 =
10 + 8 =
1 + 2 =
9 + 9 - 1 = 17
10 + 10 - 2 = 18
1 + 1 + 1 = 3
18 - 1 = 17
20 - 2 = 18
2 + 1 = 3
3 + 5 =
9 + 9 =
0 + 1 =
3 + 3 + 2 = 8
9 + 9 = 18
0 + 0 + 1 = 1
6 + 2 = 8
0 + 1 = 1
5 + 7 =
5 + 3 =
6 + 4 =
5 + 5 + 2 = 12
5 + 5 - 2 = 8
6 + 6 - 2 = 10
10 + 2 = 12
10 - 2 = 8
12 - 2 = 10
1 + 1 =
6 + 5 =
7 + 7 =
1 + 1 = 2
6 + 6 - 1 = 11
7 + 7 = 14
12 - 1 = 11
9 + 7 =
6 + 7 =
2 + 4 =
9 + 9 - 2 = 16
6 + 6 + 1 = 13
2 + 2 + 2 = 6
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