Adding Doubles+1, 10 to 90 (Horizontal Questions - Full Page)

This basic Adding Doubles plus one worksheet is designed to help kids practice adding doubles+1, for numbers 10 through 90 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, ... 89+90
  • 11+10, 12+11, 13+12, 14+13, 15+14, 16+15, ... 90+89
ANSWER KEY
16 + 15 =
 31
50 + 49 =
 99
48 + 49 =
 97
47 + 48 =
 95
34 + 33 =
 67
42 + 41 =
 83
82 + 83 =
 165
15 + 16 =
 31
54 + 55 =
 109
74 + 75 =
 149
48 + 47 =
 95
53 + 52 =
 105
34 + 35 =
 69
68 + 69 =
 137
12 + 11 =
 23
32 + 33 =
 65
44 + 43 =
 87
82 + 81 =
 163
65 + 66 =
 131
84 + 85 =
 169
58 + 57 =
 115
29 + 30 =
 59
82 + 83 =
 165
67 + 66 =
 133
23 + 24 =
 47
18 + 17 =
 35
42 + 41 =
 83
73 + 74 =
 147
33 + 32 =
 65
65 + 64 =
 129
17 + 18 =
 35
44 + 45 =
 89
20 + 21 =
 41
86 + 87 =
 173
76 + 75 =
 151
73 + 72 =
 145
88 + 89 =
 177
28 + 29 =
 57
16 + 15 =
 31
38 + 37 =
 75
27 + 26 =
 53
87 + 86 =
 173
43 + 44 =
 87
82 + 83 =
 165
49 + 50 =
 99
34 + 33 =
 67
69 + 68 =
 137
22 + 23 =
 45
52 + 53 =
 105
89 + 90 =
 179
68 + 67 =
 135
73 + 72 =
 145
23 + 22 =
 45
10 + 11 =
 21
82 + 83 =
 165
76 + 75 =
 151
32 + 33 =
 65
36 + 35 =
 71
64 + 63 =
 127
33 + 34 =
 67
30 + 29 =
 59
79 + 80 =
 159
34 + 35 =
 69
23 + 22 =
 45
83 + 82 =
 165
74 + 73 =
 147
70 + 71 =
 141
57 + 56 =
 113
56 + 57 =
 113
69 + 70 =
 139
23 + 22 =
 45
84 + 85 =
 169
11 + 12 =
 23
44 + 43 =
 87
83 + 82 =
 165
89 + 90 =
 179
32 + 31 =
 63
71 + 72 =
 143
18 + 19 =
 37
76 + 75 =
 151

 Check this box to display the answer key

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