Adding Doubles+1, 100 to 999 (Vertical Questions - Full Page)

This basic Adding Doubles plus one worksheet is designed to help kids practice adding doubles+1, for 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 Adding Doubles+1 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+101, 101+102, 102+103, 103+104, 104+105, 105+106, ... 998+999
  • 101+100, 102+101, 103+102, 104+103, 105+104, 106+105, ... 999+998
ANSWER KEY
102
+ 103
205
909
+ 910
1819
199
+ 198
397
939
+ 938
1877
930
+ 931
1861
275
+ 274
549
336
+ 337
673
276
+ 275
551
394
+ 395
789
943
+ 944
1887
569
+ 568
1137
996
+ 997
1993
967
+ 968
1935
104
+ 103
207
645
+ 644
1289
942
+ 943
1885
864
+ 863
1727
218
+ 217
435
930
+ 931
1861
313
+ 312
625
359
+ 358
717
518
+ 519
1037
240
+ 239
479
237
+ 236
473
615
+ 614
1229
231
+ 232
463
590
+ 591
1181
117
+ 116
233
490
+ 489
979
415
+ 416
831
343
+ 344
687
962
+ 961
1923
873
+ 874
1747
712
+ 713
1425
208
+ 207
415
341
+ 342
683
837
+ 838
1675
183
+ 182
365
599
+ 600
1199
308
+ 309
617
959
+ 960
1919
589
+ 588
1177
158
+ 157
315
902
+ 903
1805
799
+ 800
1599
758
+ 757
1515
991
+ 990
1981
546
+ 547
1093
604
+ 603
1207
388
+ 387
775
479
+ 480
959
364
+ 363
727
424
+ 423
847
538
+ 539
1077
330
+ 329
659
181
+ 180
361
267
+ 266
533
720
+ 721
1441
186
+ 185
371
230
+ 229
459
673
+ 674
1347
826
+ 827
1653
692
+ 691
1383
368
+ 369
737

 Check this box to display the answer key

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