Adding Doubles+1, 10 to 70 (Horizontal Questions - Full Page)

This basic Adding Doubles plus one worksheet is designed to help kids practice adding doubles+1, for numbers 10 through 70 with addition questions that change each time you visit. This math worksheet is printable and displays a full page math sheet with Horizontal Addition questions.

With this math sheet generator, you can easily create Adding Doubles+1 worksheets that are never the same and always different, providing you with an unlimited supply of math sheets to use in the classroom or at home.

Each math sheet also has an optional answer key checkbox that you can select, if you wish to print an answer key to go along with your math worksheet. And there are six different question styles to choose from, as listed below.

Possible Questions:

The possible addition questions on this math worksheet are:

  • 10+11, 11+12, 12+13, 13+14, 14+15, 15+16, ... 69+70
  • 11+10, 12+11, 13+12, 14+13, 15+14, 16+15, ... 70+69
ANSWER KEY
51 + 52 =
 103
37 + 36 =
 73
55 + 54 =
 109
21 + 22 =
 43
47 + 48 =
 95
38 + 37 =
 75
15 + 16 =
 31
63 + 64 =
 127
19 + 18 =
 37
16 + 17 =
 33
32 + 31 =
 63
53 + 52 =
 105
57 + 56 =
 113
33 + 34 =
 67
41 + 40 =
 81
70 + 69 =
 139
49 + 50 =
 99
24 + 23 =
 47
59 + 60 =
 119
24 + 25 =
 49
61 + 60 =
 121
52 + 53 =
 105
28 + 29 =
 57
20 + 19 =
 39
34 + 35 =
 69
61 + 60 =
 121
23 + 22 =
 45
32 + 33 =
 65
38 + 39 =
 77
55 + 54 =
 109
28 + 27 =
 55
57 + 58 =
 115
13 + 12 =
 25
26 + 27 =
 53
30 + 31 =
 61
70 + 69 =
 139
56 + 57 =
 113
48 + 49 =
 97
51 + 50 =
 101
19 + 20 =
 39
49 + 48 =
 97
41 + 40 =
 81
61 + 62 =
 123
21 + 20 =
 41
20 + 21 =
 41
30 + 31 =
 61
24 + 23 =
 47
12 + 13 =
 25
57 + 56 =
 113
66 + 67 =
 133
57 + 58 =
 115
44 + 43 =
 87
49 + 50 =
 99
19 + 18 =
 37
44 + 43 =
 87
46 + 47 =
 93
37 + 38 =
 75
26 + 25 =
 51
35 + 34 =
 69
56 + 57 =
 113
27 + 26 =
 53
34 + 35 =
 69
43 + 44 =
 87
47 + 46 =
 93
13 + 14 =
 27
10 + 11 =
 21
65 + 64 =
 129
34 + 33 =
 67
40 + 41 =
 81
30 + 29 =
 59
65 + 66 =
 131
38 + 39 =
 77
56 + 55 =
 111
67 + 68 =
 135
56 + 57 =
 113
37 + 36 =
 73
62 + 63 =
 125
35 + 34 =
 69
15 + 14 =
 29
21 + 22 =
 43

 Check this box to display the answer key

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