Adding Doubles+1, 100 to 999 (Horizontal Questions - Half Page)

This basic Adding Doubles plus one worksheet is designed to help kids practice adding doubles+1, for numbers 100 through 999 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:

  • 100+101, 101+102, 102+103, 103+104, 104+105, 105+106, ... 998+999
  • 101+100, 102+101, 103+102, 104+103, 105+104, 106+105, ... 999+998
ANSWER KEY
747 + 746 =
 1493
197 + 196 =
 393
268 + 269 =
 537
395 + 396 =
 791
707 + 708 =
 1415
285 + 284 =
 569
473 + 474 =
 947
703 + 702 =
 1405
602 + 601 =
 1203
881 + 880 =
 1761
860 + 861 =
 1721
147 + 148 =
 295
766 + 765 =
 1531
441 + 440 =
 881
311 + 312 =
 623
539 + 540 =
 1079
218 + 219 =
 437
254 + 253 =
 507
259 + 260 =
 519
976 + 977 =
 1953
622 + 621 =
 1243

 Check this box to display the answer key

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