Adding two-digit numbers 10 to 80 (Horizontal Questions - Full Page)

This basic Addition worksheet is designed to help kids practice adding two-digit 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 Addition 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+10, 11+10, 12+10, 13+10, 14+10, 15+10 ... 80+10
  • 10+11, 11+11, 12+11, 13+11, 14+11, 15+11 ... 80+11
  • 10+12, 11+12, 12+12, 13+12, 14+12, 15+12 ... 80+12
  • ...
  • 10+80, 11+80, 12+80, 13+80, 14+80, 15+80 ... 80+80
ANSWER KEY
21 + 21 =
 42
42 + 23 =
 65
65 + 54 =
 119
69 + 43 =
 112
72 + 66 =
 138
66 + 46 =
 112
10 + 18 =
 28
41 + 38 =
 79
24 + 44 =
 68
59 + 60 =
 119
13 + 21 =
 34
65 + 40 =
 105
69 + 14 =
 83
67 + 20 =
 87
60 + 40 =
 100
35 + 63 =
 98
42 + 50 =
 92
33 + 76 =
 109
66 + 74 =
 140
27 + 76 =
 103
14 + 19 =
 33
34 + 23 =
 57
29 + 66 =
 95
56 + 20 =
 76
79 + 77 =
 156
70 + 77 =
 147
32 + 24 =
 56
51 + 28 =
 79
36 + 28 =
 64
77 + 19 =
 96
33 + 51 =
 84
62 + 45 =
 107
49 + 56 =
 105
21 + 25 =
 46
55 + 56 =
 111
28 + 71 =
 99
53 + 71 =
 124
20 + 32 =
 52
38 + 42 =
 80
72 + 26 =
 98
55 + 75 =
 130
31 + 60 =
 91
14 + 23 =
 37
58 + 77 =
 135
46 + 36 =
 82
47 + 61 =
 108
78 + 43 =
 121
71 + 18 =
 89
71 + 59 =
 130
48 + 46 =
 94
61 + 32 =
 93
40 + 74 =
 114
37 + 41 =
 78
10 + 38 =
 48
78 + 73 =
 151
33 + 48 =
 81
42 + 42 =
 84
11 + 10 =
 21
69 + 31 =
 100
55 + 79 =
 134
30 + 73 =
 103
42 + 56 =
 98
63 + 63 =
 126
31 + 52 =
 83
28 + 20 =
 48
27 + 80 =
 107
60 + 34 =
 94
79 + 78 =
 157
67 + 69 =
 136
44 + 69 =
 113
37 + 33 =
 70
49 + 66 =
 115
32 + 35 =
 67
31 + 36 =
 67
75 + 13 =
 88
52 + 49 =
 101
38 + 73 =
 111
51 + 77 =
 128
53 + 58 =
 111
23 + 51 =
 74

 Check this box to display the answer key

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