Adding Doubles+1, 10 to 80 (Horizontal Questions - Full Page)

This basic Adding Doubles plus one worksheet is designed to help kids practice adding doubles+1, for numbers 10 through 80 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, ... 79+80
  • 11+10, 12+11, 13+12, 14+13, 15+14, 16+15, ... 80+79
ANSWER KEY
56 + 55 =
 111
69 + 70 =
 139
41 + 42 =
 83
31 + 30 =
 61
63 + 62 =
 125
30 + 29 =
 59
75 + 76 =
 151
11 + 12 =
 23
28 + 29 =
 57
15 + 14 =
 29
41 + 40 =
 81
75 + 76 =
 151
32 + 33 =
 65
10 + 11 =
 21
27 + 26 =
 53
75 + 74 =
 149
45 + 44 =
 89
17 + 18 =
 35
57 + 58 =
 115
49 + 48 =
 97
69 + 68 =
 137
32 + 31 =
 63
13 + 14 =
 27
19 + 20 =
 39
14 + 15 =
 29
48 + 47 =
 95
79 + 78 =
 157
60 + 61 =
 121
70 + 71 =
 141
75 + 76 =
 151
22 + 21 =
 43
26 + 25 =
 51
80 + 79 =
 159
59 + 60 =
 119
36 + 37 =
 73
52 + 51 =
 103
15 + 14 =
 29
46 + 45 =
 91
70 + 71 =
 141
13 + 14 =
 27
23 + 24 =
 47
41 + 42 =
 83
37 + 36 =
 73
34 + 35 =
 69
52 + 53 =
 105
59 + 58 =
 117
72 + 71 =
 143
40 + 41 =
 81
29 + 28 =
 57
27 + 26 =
 53
10 + 11 =
 21
61 + 60 =
 121
21 + 22 =
 43
39 + 40 =
 79
13 + 12 =
 25
34 + 35 =
 69
51 + 50 =
 101
68 + 69 =
 137
56 + 57 =
 113
63 + 62 =
 125
72 + 71 =
 143
64 + 63 =
 127
28 + 29 =
 57
11 + 12 =
 23
25 + 26 =
 51
63 + 62 =
 125
72 + 71 =
 143
73 + 74 =
 147
45 + 44 =
 89
25 + 26 =
 51
22 + 21 =
 43
73 + 72 =
 145
40 + 39 =
 79
35 + 36 =
 71
54 + 55 =
 109
23 + 22 =
 45
42 + 43 =
 85
23 + 22 =
 45
40 + 39 =
 79
21 + 22 =
 43

 Check this box to display the answer key

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