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Click Print worksheet and choose your printer, or pick “Save as PDF” as the destination to keep a digital copy. The answer key prints on its own page.

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3-digit addition worksheet generator

Three-digit addition practice with an option for three addends when students are ready for longer columns.

3-Digit Addition

Name: Date:

1.
981 + 376 =
2.
535 + 836 =
3.
558 + 412 =
4.
166 + 789 =
5.
997 + 842 =
6.
513 + 951 =
7.
901 + 972 =
8.
664 + 323 =
9.
526 + 374 =
10.
795 + 878 =
11.
681 + 802 =
12.
808 + 687 =
13.
507 + 166 =
14.
393 + 285 =
15.
777 + 190 =
16.
351 + 158 =
17.
666 + 934 =
18.
412 + 290 =
19.
101 + 713 =
20.
828 + 143 =

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3-Digit Addition — Answer Key

Name: Date:

1.
981 + 376 =
1357
2.
535 + 836 =
1371
3.
558 + 412 =
970
4.
166 + 789 =
955
5.
997 + 842 =
1839
6.
513 + 951 =
1464
7.
901 + 972 =
1873
8.
664 + 323 =
987
9.
526 + 374 =
900
10.
795 + 878 =
1673
11.
681 + 802 =
1483
12.
808 + 687 =
1495
13.
507 + 166 =
673
14.
393 + 285 =
678
15.
777 + 190 =
967
16.
351 + 158 =
509
17.
666 + 934 =
1600
18.
412 + 290 =
702
19.
101 + 713 =
814
20.
828 + 143 =
971

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Frequently asked questions

How do I print or save these worksheets as a PDF?: Click Print worksheet and choose your printer, or pick “Save as PDF” as the destination to keep a digital copy. The answer key prints on its own page.
Can I get a fresh set of problems?: Yes. Click New problems for a brand new randomly generated worksheet, as many times as you like.
Is this worksheet generator free?: Yes. Every generator on the site is free to use, with no account, no watermark and unlimited printing for classroom or home use.