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
389
+ 373
762
182
+ 368
550
334
+ 165
499
258
+ 157
415
326
+ 197
523
279
+ 256
535
236
+ 309
545
394
+ 309
703
341
+ 275
616
298
+ 182
480
238
+ 166
404
327
+ 305
632
183
+ 292
475
100
+ 339
439
179
+ 282
461
365
+ 179
544
167
+ 395
562
368
+ 339
707
316
+ 168
484
305
+ 366
671
334
+ 389
723
283
+ 323
606
142
+ 379
521
252
+ 100
352
397
+ 371
768
164
+ 184
348
202
+ 368
570
223
+ 200
423
120
+ 198
318
177
+ 338
515
236
+ 127
363
277
+ 338
615
186
+ 328
514
280
+ 365
645
140
+ 312
452
310
+ 325
635
254
+ 315
569
376
+ 157
533
359
+ 189
548
109
+ 182
291
228
+ 166
394
333
+ 266
599
248
+ 396
644
141
+ 267
408
273
+ 230
503
166
+ 381
547
355
+ 139
494
190
+ 176
366

 Check this box to display the answer key

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