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Add Within 1000 — With Regrouping is a free printable Grade 3 math worksheet on catching a carry that was dropped, aligned to Common Core standard 3.NBT.A.2. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 12 of 25 · the same problems every time you open this link.

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One paper per student

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Add Within 1000 — With Regrouping

3.NBT.A.2

NameDate

Find the mistake and write the right answer.

1.Freya worked out 202 + 478 = 670. What is the right answer?
2.Priya worked out 456 + 180 = 536. What is the right answer?
3.Ama worked out 299 + 186 = 375. What is the right answer?
4.Dilan worked out 473 + 231 = 604. What is the right answer?
5.Zara worked out 474 + 477 = 841. What is the right answer?
6.Kofi worked out 278 + 392 = 560. What is the right answer?
7.Jonah worked out 458 + 372 = 720. What is the right answer?
8.Ama worked out 169 + 257 = 316. What is the right answer?

LessonPrint · 3.NBT.A.2 · Set 12 · free to copy for classroom use

Answer key — Add Within 1000 — With Regrouping

Set 12. Prints on its own sheet.

  1. 1.680
  2. 2.636
  3. 3.485
  4. 4.704
  5. 5.951
  6. 6.670
  7. 7.830
  8. 8.426

More practice for 3.NBT.A.2

Add and subtract within 1000 confidently.

Teaching this next? Fluent Addition and Subtraction to 1000 is the 45-minute plan for it, with the misconceptions to expect.

All Grade 3 worksheets

Last reviewed 2026-09-05. Aligned to 3.NBT.A.2 of the Common Core State Standards for Mathematics.