Adding three-digit numbers 100 to 900 (Vertical Questions - Full Page)

This basic Addition worksheet is designed to help kids practice adding three-digit numbers (100 through 900) 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 ... 900+100
  • 100+101, 101+101, 102+101, 103+101, 104+101, 105+101 ... 900+101
  • 100+102, 101+102, 102+102, 103+102, 104+102, 105+102 ... 900+102
  • ...
  • 100+900, 101+900, 102+900, 103+900, 104+900, 105+900 ... 900+900
ANSWER KEY
267
+ 770
1037
733
+ 602
1335
836
+ 764
1600
509
+ 149
658
290
+ 556
846
183
+ 493
676
465
+ 832
1297
237
+ 786
1023
768
+ 572
1340
683
+ 519
1202
705
+ 116
821
105
+ 703
808
687
+ 154
841
119
+ 601
720
480
+ 549
1029
782
+ 487
1269
553
+ 287
840
619
+ 198
817
262
+ 873
1135
179
+ 364
543
643
+ 553
1196
141
+ 333
474
873
+ 250
1123
100
+ 530
630
775
+ 539
1314
328
+ 864
1192
131
+ 758
889
174
+ 172
346
385
+ 706
1091
503
+ 577
1080
679
+ 258
937
268
+ 898
1166
725
+ 734
1459
605
+ 123
728
294
+ 566
860
233
+ 535
768
287
+ 774
1061
512
+ 705
1217
656
+ 630
1286
187
+ 620
807
345
+ 754
1099
511
+ 571
1082
603
+ 770
1373
360
+ 310
670
826
+ 247
1073
534
+ 623
1157
368
+ 239
607
446
+ 731
1177
602
+ 641
1243
582
+ 196
778
574
+ 819
1393
764
+ 676
1440
400
+ 646
1046
760
+ 809
1569
605
+ 278
883
157
+ 536
693
433
+ 475
908
507
+ 279
786
840
+ 217
1057
134
+ 891
1025
377
+ 316
693
467
+ 439
906
521
+ 752
1273
122
+ 394
516

 Check this box to display the answer key

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