Adding Doubles 100 to 999 (Horizontal Questions - Full Page)

This basic Adding Doubles worksheet is designed to help kids practice adding doubles, for numbers 100 through 999 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 Adding Doubles 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+101, 102+102, 103+103, 104+104, 105+105, ... 999+999
ANSWER KEY
324 + 324 =
 648
156 + 156 =
 312
247 + 247 =
 494
203 + 203 =
 406
260 + 260 =
 520
972 + 972 =
 1944
120 + 120 =
 240
655 + 655 =
 1310
203 + 203 =
 406
301 + 301 =
 602
297 + 297 =
 594
664 + 664 =
 1328
908 + 908 =
 1816
866 + 866 =
 1732
831 + 831 =
 1662
612 + 612 =
 1224
898 + 898 =
 1796
395 + 395 =
 790
989 + 989 =
 1978
866 + 866 =
 1732
622 + 622 =
 1244
531 + 531 =
 1062
238 + 238 =
 476
896 + 896 =
 1792
346 + 346 =
 692
688 + 688 =
 1376
786 + 786 =
 1572
497 + 497 =
 994
241 + 241 =
 482
623 + 623 =
 1246
683 + 683 =
 1366
273 + 273 =
 546
705 + 705 =
 1410
686 + 686 =
 1372
373 + 373 =
 746
863 + 863 =
 1726
467 + 467 =
 934
717 + 717 =
 1434
720 + 720 =
 1440
401 + 401 =
 802
743 + 743 =
 1486
952 + 952 =
 1904
582 + 582 =
 1164
626 + 626 =
 1252
345 + 345 =
 690
306 + 306 =
 612
267 + 267 =
 534
515 + 515 =
 1030
366 + 366 =
 732
656 + 656 =
 1312
905 + 905 =
 1810
495 + 495 =
 990
583 + 583 =
 1166
859 + 859 =
 1718
787 + 787 =
 1574
596 + 596 =
 1192
323 + 323 =
 646
780 + 780 =
 1560
618 + 618 =
 1236
404 + 404 =
 808

 Check this box to display the answer key

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