Adding Doubles Minus 1 (A-J) Math Worksheet With Answers Page 14
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20Adding Doubles Minus 1 (G) Answers
Use an adding doubles strategy to find each sum
Example: 5 + 4 = 5 + 5 - 1 = 10 - 1 = 9
4 + 3 =
5 + 4 =
6 + 5 =
4 + 4 - 1 = 7
5 + 5 - 1 = 9
6 + 6 - 1 = 11
8 - 1 = 7
10 - 1 = 9
12 - 1 = 11
7 + 6 =
7 + 6 =
4 + 3 =
7 + 7 - 1 = 13
7 + 7 - 1 = 13
4 + 4 - 1 = 7
14 - 1 = 13
14 - 1 = 13
8 - 1 = 7
2 + 1 =
4 + 3 =
2 + 1 =
2 + 2 - 1 = 3
4 + 4 - 1 = 7
2 + 2 - 1 = 3
4 - 1 = 3
8 - 1 = 7
4 - 1 = 3
8 + 7 =
9 + 8 =
7 + 6 =
8 + 8 - 1 = 15
9 + 9 - 1 = 17
7 + 7 - 1 = 13
16 - 1 = 15
18 - 1 = 17
14 - 1 = 13
10 + 9 =
3 + 2 =
5 + 4 =
10 + 10 - 1 = 19
3 + 3 - 1 = 5
5 + 5 - 1 = 9
20 - 1 = 19
6 - 1 = 5
10 - 1 = 9
5 + 4 =
2 + 1 =
3 + 2 =
5 + 5 - 1 = 9
2 + 2 - 1 = 3
3 + 3 - 1 = 5
10 - 1 = 9
4 - 1 = 3
6 - 1 = 5
3 + 2 =
10 + 9 =
9 + 8 =
3 + 3 - 1 = 5
10 + 10 - 1 = 19
9 + 9 - 1 = 17
6 - 1 = 5
20 - 1 = 19
18 - 1 = 17
9 + 8 =
6 + 5 =
1 + 0 =
9 + 9 - 1 = 17
6 + 6 - 1 = 11
1 + 1 - 1 = 1
18 - 1 = 17
12 - 1 = 11
2 - 1 = 1
1 + 0 =
8 + 7 =
8 + 7 =
1 + 1 - 1 = 1
8 + 8 - 1 = 15
8 + 8 - 1 = 15
2 - 1 = 1
16 - 1 = 15
16 - 1 = 15
6 + 5 =
1 + 0 =
10 + 9 =
6 + 6 - 1 = 11
1 + 1 - 1 = 1
10 + 10 - 1 = 19
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