Adding Doubles+1, 100 to 999 (Horizontal 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 Horizontal 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
168 + 169 =
 337
843 + 842 =
 1685
287 + 288 =
 575
901 + 900 =
 1801
248 + 247 =
 495
250 + 251 =
 501
968 + 967 =
 1935
989 + 990 =
 1979
850 + 849 =
 1699
452 + 453 =
 905
816 + 815 =
 1631
692 + 691 =
 1383
174 + 175 =
 349
602 + 603 =
 1205
279 + 278 =
 557
623 + 622 =
 1245
524 + 523 =
 1047
425 + 426 =
 851
385 + 386 =
 771
778 + 779 =
 1557
220 + 219 =
 439
780 + 781 =
 1561
341 + 340 =
 681
403 + 404 =
 807
444 + 443 =
 887
706 + 707 =
 1413
472 + 471 =
 943
183 + 182 =
 365
933 + 932 =
 1865
934 + 935 =
 1869
456 + 457 =
 913
564 + 565 =
 1129
517 + 516 =
 1033
673 + 674 =
 1347
171 + 172 =
 343
421 + 420 =
 841
240 + 239 =
 479
288 + 287 =
 575
621 + 622 =
 1243
846 + 845 =
 1691
322 + 321 =
 643
916 + 917 =
 1833
916 + 917 =
 1833
506 + 507 =
 1013
749 + 748 =
 1497
153 + 152 =
 305
993 + 994 =
 1987
830 + 829 =
 1659
135 + 134 =
 269
316 + 315 =
 631
693 + 694 =
 1387
964 + 965 =
 1929
931 + 932 =
 1863
179 + 178 =
 357
802 + 803 =
 1605
743 + 742 =
 1485
803 + 804 =
 1607
472 + 471 =
 943
480 + 479 =
 959
718 + 719 =
 1437

 Check this box to display the answer key

Print
Refresh