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
568 + 256 =
 824
697 + 680 =
 1377
216 + 669 =
 885
532 + 665 =
 1197
658 + 165 =
 823
201 + 296 =
 497
613 + 532 =
 1145
391 + 186 =
 577
188 + 461 =
 649
123 + 360 =
 483
405 + 182 =
 587
676 + 700 =
 1376
374 + 621 =
 995
332 + 633 =
 965
278 + 261 =
 539
187 + 685 =
 872
469 + 659 =
 1128
357 + 511 =
 868
217 + 689 =
 906
372 + 342 =
 714
690 + 115 =
 805
618 + 369 =
 987
555 + 217 =
 772
113 + 586 =
 699
445 + 216 =
 661
643 + 368 =
 1011
178 + 657 =
 835
625 + 400 =
 1025
565 + 129 =
 694
551 + 503 =
 1054
585 + 127 =
 712
167 + 524 =
 691
687 + 446 =
 1133
664 + 450 =
 1114
147 + 401 =
 548
469 + 339 =
 808
237 + 387 =
 624
220 + 505 =
 725
348 + 202 =
 550
579 + 320 =
 899
567 + 152 =
 719
441 + 665 =
 1106
338 + 358 =
 696
539 + 412 =
 951
243 + 302 =
 545
120 + 139 =
 259
627 + 626 =
 1253
418 + 192 =
 610
387 + 389 =
 776
456 + 241 =
 697
211 + 470 =
 681
480 + 384 =
 864
345 + 199 =
 544
691 + 436 =
 1127
149 + 593 =
 742
591 + 591 =
 1182
390 + 617 =
 1007
197 + 427 =
 624
232 + 329 =
 561
109 + 550 =
 659

 Check this box to display the answer key

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