Adding three-digit numbers 100 to 400 (Vertical Questions - Half Page x 2)

This basic Addition worksheet is designed to help kids practice adding three-digit numbers (100 through 400) with addition questions that change each time you visit. This math worksheet is printable and displays two half page math sheets 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 ... 400+100
  • 100+101, 101+101, 102+101, 103+101, 104+101, 105+101 ... 400+101
  • 100+102, 101+102, 102+102, 103+102, 104+102, 105+102 ... 400+102
  • ...
  • 100+400, 101+400, 102+400, 103+400, 104+400, 105+400 ... 400+400
ANSWER KEY
214
+ 319
533
358
+ 260
618
282
+ 204
486
142
+ 329
471
161
+ 227
388
134
+ 276
410
388
+ 399
787
326
+ 219
545
158
+ 130
288
398
+ 298
696
335
+ 272
607
190
+ 191
381
252
+ 233
485
304
+ 394
698
375
+ 136
511
363
+ 115
478
303
+ 390
693
285
+ 337
622
241
+ 306
547
133
+ 137
270
400
+ 307
707
167
+ 146
313
398
+ 163
561
120
+ 357
477
332
+ 228
560
164
+ 228
392
357
+ 112
469
103
+ 116
219
325
+ 309
634
361
+ 387
748
318
+ 304
622
219
+ 216
435
145
+ 335
480
266
+ 222
488
290
+ 315
605
106
+ 345
451
384
+ 189
573
183
+ 380
563
288
+ 138
426
222
+ 158
380
178
+ 237
415
164
+ 180
344
183
+ 259
442
351
+ 134
485
332
+ 316
648
360
+ 150
510
344
+ 378
722
347
+ 275
622

 Check this box to display the answer key

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