Adding Doubles+1, 100 to 999 (Horizontal Questions - Half Page x 2)

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 two half page math sheets 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
984 + 985 =
 1969
455 + 456 =
 911
916 + 915 =
 1831
835 + 836 =
 1671
372 + 371 =
 743
674 + 675 =
 1349
120 + 119 =
 239
685 + 684 =
 1369
583 + 584 =
 1167
631 + 632 =
 1263
508 + 509 =
 1017
696 + 695 =
 1391
633 + 632 =
 1265
944 + 945 =
 1889
871 + 870 =
 1741
135 + 134 =
 269
169 + 168 =
 337
666 + 667 =
 1333
822 + 823 =
 1645
506 + 507 =
 1013
818 + 817 =
 1635
841 + 840 =
 1681
611 + 610 =
 1221
705 + 706 =
 1411
966 + 965 =
 1931
561 + 560 =
 1121
759 + 760 =
 1519
986 + 987 =
 1973
154 + 155 =
 309
125 + 124 =
 249
319 + 318 =
 637
693 + 694 =
 1387
823 + 824 =
 1647
176 + 177 =
 353
999 + 998 =
 1997
648 + 647 =
 1295
125 + 124 =
 249
754 + 755 =
 1509
362 + 363 =
 725
748 + 749 =
 1497
599 + 600 =
 1199
626 + 625 =
 1251

 Check this box to display the answer key

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