Adding three-digit numbers 500 to 999 (Horizontal Questions - Half Page)

This basic Addition worksheet is designed to help kids practice adding three-digit numbers (500 through 999) with addition questions that change each time you visit. This math worksheet is printable and displays a half page math sheet with Horizontal 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:

  • 500+500, 501+500, 502+500, 503+500, 504+500, 505+500 ... 999+500
  • 500+501, 501+501, 502+501, 503+501, 504+501, 505+501 ... 999+501
  • 500+502, 501+502, 502+502, 503+502, 504+502, 505+502 ... 999+502
  • ...
  • 500+999, 501+999, 502+999, 503+999, 504+999, 505+999 ... 999+999
ANSWER KEY
851 + 763 =
 1614
941 + 712 =
 1653
536 + 753 =
 1289
849 + 852 =
 1701
806 + 544 =
 1350
604 + 531 =
 1135
832 + 577 =
 1409
699 + 762 =
 1461
815 + 729 =
 1544
772 + 523 =
 1295
575 + 843 =
 1418
970 + 610 =
 1580
863 + 631 =
 1494
886 + 698 =
 1584
698 + 797 =
 1495
759 + 564 =
 1323
662 + 532 =
 1194
503 + 665 =
 1168
668 + 730 =
 1398
774 + 509 =
 1283
773 + 683 =
 1456

 Check this box to display the answer key

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