Adding Doubles+1, 10 to 80 (Horizontal Questions - Half Page x 2)

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 two half page math sheets 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
15 + 14 =
 29
43 + 42 =
 85
31 + 32 =
 63
22 + 23 =
 45
31 + 32 =
 63
45 + 46 =
 91
28 + 27 =
 55
76 + 77 =
 153
43 + 44 =
 87
65 + 66 =
 131
33 + 32 =
 65
50 + 49 =
 99
78 + 77 =
 155
70 + 69 =
 139
76 + 77 =
 153
57 + 56 =
 113
68 + 67 =
 135
47 + 48 =
 95
58 + 57 =
 115
46 + 47 =
 93
13 + 14 =
 27
78 + 79 =
 157
31 + 30 =
 61
60 + 61 =
 121
24 + 23 =
 47
62 + 61 =
 123
51 + 52 =
 103
74 + 73 =
 147
63 + 62 =
 125
77 + 76 =
 153
11 + 12 =
 23
10 + 11 =
 21
32 + 33 =
 65
38 + 39 =
 77
60 + 59 =
 119
23 + 24 =
 47
69 + 68 =
 137
71 + 72 =
 143
42 + 43 =
 85
64 + 63 =
 127
29 + 30 =
 59
49 + 48 =
 97
78 + 79 =
 157
23 + 22 =
 45
22 + 23 =
 45
53 + 54 =
 107
19 + 18 =
 37
61 + 62 =
 123
20 + 19 =
 39
27 + 28 =
 55
56 + 57 =
 113
36 + 35 =
 71
36 + 35 =
 71
46 + 45 =
 91
74 + 75 =
 149
11 + 10 =
 21

 Check this box to display the answer key

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