Adding three-digit numbers 100 to 700 (Horizontal Questions - Half Page)

This basic Addition worksheet is designed to help kids practice adding three-digit numbers (100 through 700) 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 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:

  • 100+100, 101+100, 102+100, 103+100, 104+100, 105+100 ... 700+100
  • 100+101, 101+101, 102+101, 103+101, 104+101, 105+101 ... 700+101
  • 100+102, 101+102, 102+102, 103+102, 104+102, 105+102 ... 700+102
  • ...
  • 100+700, 101+700, 102+700, 103+700, 104+700, 105+700 ... 700+700
ANSWER KEY
664 + 472 =
 1136
449 + 403 =
 852
695 + 648 =
 1343
427 + 152 =
 579
295 + 593 =
 888
681 + 162 =
 843
584 + 376 =
 960
341 + 601 =
 942
200 + 157 =
 357
144 + 645 =
 789
479 + 626 =
 1105
126 + 308 =
 434
471 + 631 =
 1102
200 + 249 =
 449
218 + 370 =
 588
413 + 217 =
 630
493 + 263 =
 756
342 + 374 =
 716
619 + 187 =
 806
610 + 586 =
 1196
487 + 488 =
 975

 Check this box to display the answer key

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