Adding Doubles+1, 10 to 80 (Horizontal Questions - Half 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 half 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
19 + 18 =
 37
51 + 50 =
 101
45 + 46 =
 91
71 + 70 =
 141
71 + 70 =
 141
39 + 40 =
 79
11 + 12 =
 23
68 + 67 =
 135
14 + 15 =
 29
48 + 49 =
 97
61 + 60 =
 121
44 + 45 =
 89
60 + 59 =
 119
67 + 66 =
 133
61 + 62 =
 123
79 + 80 =
 159
19 + 20 =
 39
75 + 76 =
 151
53 + 52 =
 105
33 + 32 =
 65
78 + 79 =
 157
23 + 24 =
 47
59 + 58 =
 117
48 + 47 =
 95
50 + 49 =
 99
75 + 74 =
 149
23 + 24 =
 47
67 + 68 =
 135

 Check this box to display the answer key

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