Adding three-digit numbers 100 to 700 (Horizontal Questions - Half Page)

This basic Addition worksheet is designed to help kids practice adding three-digit numbers (100 through 700) 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:

  • 100+100, 101+100, 102+100, 103+100, 104+100, 105+100 ... 700+100
  • 100+101, 101+101, 102+101, 103+101, 104+101, 105+101 ... 700+101
  • 100+102, 101+102, 102+102, 103+102, 104+102, 105+102 ... 700+102
  • ...
  • 100+700, 101+700, 102+700, 103+700, 104+700, 105+700 ... 700+700
ANSWER KEY
390 + 300 =
 690
382 + 379 =
 761
283 + 220 =
 503
263 + 546 =
 809
532 + 333 =
 865
571 + 145 =
 716
539 + 307 =
 846
526 + 367 =
 893
318 + 528 =
 846
225 + 486 =
 711
265 + 257 =
 522
352 + 275 =
 627
470 + 202 =
 672
555 + 313 =
 868
521 + 230 =
 751
102 + 293 =
 395
187 + 513 =
 700
352 + 295 =
 647
131 + 556 =
 687
236 + 112 =
 348
502 + 609 =
 1111

 Check this box to display the answer key

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