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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 8 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.Dilan worked out 123 + 317 = 430. What is the right answer?
2.Dilan worked out 182 + 476 = 558. What is the right answer?
3.Luis worked out 220 + 384 = 504. What is the right answer?
4.Noor worked out 381 + 245 = 526. What is the right answer?
5.Freya worked out 327 + 395 = 612. What is the right answer?
6.Luis worked out 164 + 380 = 444. What is the right answer?
7.Priya worked out 439 + 309 = 738. What is the right answer?
8.Luis worked out 358 + 429 = 777. What is the right answer?

LessonPrint · 3.NBT.A.2 · Set 8 · free to copy for classroom use

Answer key — Add Within 1000 — With Regrouping

Set 8. Prints on its own sheet.

  1. 1.440
  2. 2.658
  3. 3.604
  4. 4.626
  5. 5.722
  6. 6.544
  7. 7.748
  8. 8.787

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.