Adding three-digit numbers 100 to 700 (Horizontal Questions - Full 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 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:

  • 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
110 + 167 =
 277
348 + 670 =
 1018
295 + 416 =
 711
406 + 456 =
 862
227 + 351 =
 578
629 + 504 =
 1133
554 + 647 =
 1201
661 + 218 =
 879
660 + 124 =
 784
283 + 375 =
 658
547 + 684 =
 1231
659 + 460 =
 1119
411 + 196 =
 607
656 + 451 =
 1107
212 + 666 =
 878
624 + 572 =
 1196
297 + 115 =
 412
308 + 298 =
 606
344 + 317 =
 661
305 + 166 =
 471
541 + 205 =
 746
456 + 407 =
 863
288 + 349 =
 637
348 + 638 =
 986
177 + 418 =
 595
466 + 355 =
 821
440 + 447 =
 887
452 + 323 =
 775
114 + 670 =
 784
219 + 128 =
 347
693 + 341 =
 1034
452 + 135 =
 587
637 + 243 =
 880
321 + 114 =
 435
260 + 363 =
 623
624 + 449 =
 1073
350 + 599 =
 949
641 + 556 =
 1197
525 + 526 =
 1051
263 + 600 =
 863
697 + 655 =
 1352
694 + 519 =
 1213
117 + 654 =
 771
453 + 185 =
 638
186 + 593 =
 779
341 + 480 =
 821
271 + 240 =
 511
462 + 394 =
 856
323 + 624 =
 947
480 + 536 =
 1016
281 + 586 =
 867
497 + 433 =
 930
380 + 693 =
 1073
139 + 203 =
 342
368 + 109 =
 477
390 + 119 =
 509
365 + 173 =
 538
246 + 493 =
 739
494 + 558 =
 1052
321 + 373 =
 694

 Check this box to display the answer key

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