Adding three-digit numbers 100 to 700 (Horizontal Questions - Half Page x 2)

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 two half page math sheets 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
180 + 618 =
 798
386 + 205 =
 591
595 + 548 =
 1143
315 + 645 =
 960
253 + 688 =
 941
220 + 490 =
 710
626 + 559 =
 1185
515 + 257 =
 772
393 + 687 =
 1080
230 + 577 =
 807
309 + 565 =
 874
642 + 151 =
 793
140 + 309 =
 449
174 + 668 =
 842
123 + 624 =
 747
242 + 513 =
 755
466 + 570 =
 1036
677 + 522 =
 1199
700 + 507 =
 1207
222 + 636 =
 858
200 + 633 =
 833
334 + 348 =
 682
280 + 149 =
 429
207 + 316 =
 523
615 + 365 =
 980
294 + 419 =
 713
299 + 285 =
 584
340 + 457 =
 797
699 + 265 =
 964
212 + 569 =
 781
626 + 395 =
 1021
511 + 312 =
 823
398 + 671 =
 1069
127 + 534 =
 661
225 + 172 =
 397
257 + 694 =
 951
191 + 138 =
 329
521 + 520 =
 1041
547 + 684 =
 1231
131 + 130 =
 261
284 + 148 =
 432
318 + 589 =
 907

 Check this box to display the answer key

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