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

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 a half 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 ... 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
189
+ 160
349
195
+ 164
359
214
+ 195
409
137
+ 199
336
125
+ 175
300
293
+ 117
410
144
+ 172
316
207
+ 134
341
126
+ 270
396
281
+ 158
439
148
+ 277
425
269
+ 310
579
400
+ 180
580
151
+ 156
307
182
+ 265
447
165
+ 152
317
200
+ 180
380
190
+ 303
493
302
+ 195
497
145
+ 206
351
300
+ 315
615
374
+ 104
478
139
+ 282
421
316
+ 303
619

 Check this box to display the answer key

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