Adding Doubles Plus 1 Worksheet With Answer Key Page 2
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2Adding Doubles Plus 1 (C) Answers
Use an adding doubles strategy to find each sum
Example: 5 + 6 = 5 + 5 + 1 = 10 + 1 = 11
2 + 3 =
1 + 2 =
0 + 1 =
2 + 2 + 1 = 5
1 + 1 + 1 = 3
0 + 0 + 1 = 1
4 + 1 = 5
2 + 1 = 3
0 + 1 = 1
6 + 7 =
6 + 7 =
9 + 10 =
6 + 6 + 1 = 13
6 + 6 + 1 = 13
9 + 9 + 1 = 19
12 + 1 = 13
12 + 1 = 13
18 + 1 = 19
5 + 6 =
3 + 4 =
1 + 2 =
5 + 5 + 1 = 11
3 + 3 + 1 = 7
1 + 1 + 1 = 3
10 + 1 = 11
6 + 1 = 7
2 + 1 = 3
1 + 2 =
9 + 10 =
6 + 7 =
1 + 1 + 1 = 3
9 + 9 + 1 = 19
6 + 6 + 1 = 13
2 + 1 = 3
18 + 1 = 19
12 + 1 = 13
4 + 5 =
2 + 3 =
4 + 5 =
4 + 4 + 1 = 9
2 + 2 + 1 = 5
4 + 4 + 1 = 9
8 + 1 = 9
4 + 1 = 5
8 + 1 = 9
3 + 4 =
8 + 9 =
2 + 3 =
3 + 3 + 1 = 7
8 + 8 + 1 = 17
2 + 2 + 1 = 5
6 + 1 = 7
16 + 1 = 17
4 + 1 = 5
9 + 10 =
4 + 5 =
5 + 6 =
9 + 9 + 1 = 19
4 + 4 + 1 = 9
5 + 5 + 1 = 11
18 + 1 = 19
8 + 1 = 9
10 + 1 = 11
0 + 1 =
7 + 8 =
8 + 9 =
0 + 0 + 1 = 1
7 + 7 + 1 = 15
8 + 8 + 1 = 17
0 + 1 = 1
14 + 1 = 15
16 + 1 = 17
7 + 8 =
0 + 1 =
7 + 8 =
7 + 7 + 1 = 15
0 + 0 + 1 = 1
7 + 7 + 1 = 15
14 + 1 = 15
0 + 1 = 1
14 + 1 = 15
8 + 9 =
5 + 6 =
3 + 4 =
8 + 8 + 1 = 17
5 + 5 + 1 = 11
3 + 3 + 1 = 7
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