Adding three-digit numbers 100 to 999 (Vertical Questions - Full Page)

This basic Addition worksheet is designed to help kids practice adding three-digit 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 Vertical 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 ... 999+100
  • 100+101, 101+101, 102+101, 103+101, 104+101, 105+101 ... 999+101
  • 100+102, 101+102, 102+102, 103+102, 104+102, 105+102 ... 999+102
  • ...
  • 100+999, 101+999, 102+999, 103+999, 104+999, 105+999 ... 999+999
ANSWER KEY
919
+ 474
1393
352
+ 139
491
976
+ 507
1483
118
+ 837
955
262
+ 174
436
364
+ 531
895
395
+ 679
1074
765
+ 565
1330
734
+ 721
1455
871
+ 318
1189
102
+ 731
833
293
+ 290
583
962
+ 448
1410
994
+ 585
1579
193
+ 739
932
110
+ 593
703
322
+ 157
479
218
+ 961
1179
897
+ 872
1769
738
+ 399
1137
913
+ 322
1235
286
+ 147
433
709
+ 775
1484
455
+ 254
709
938
+ 134
1072
158
+ 428
586
974
+ 769
1743
721
+ 280
1001
976
+ 190
1166
364
+ 821
1185
549
+ 103
652
433
+ 221
654
730
+ 623
1353
308
+ 821
1129
643
+ 294
937
765
+ 846
1611
904
+ 814
1718
392
+ 404
796
252
+ 402
654
468
+ 326
794
133
+ 979
1112
485
+ 922
1407
800
+ 436
1236
607
+ 547
1154
957
+ 535
1492
375
+ 367
742
332
+ 906
1238
715
+ 688
1403
991
+ 269
1260
754
+ 287
1041
237
+ 169
406
145
+ 258
403
848
+ 629
1477
221
+ 427
648
946
+ 751
1697
119
+ 148
267
307
+ 627
934
698
+ 163
861
537
+ 618
1155
345
+ 664
1009
713
+ 664
1377
691
+ 707
1398
719
+ 751
1470
756
+ 965
1721

 Check this box to display the answer key

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