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Round Three-Digit Numbers to Ten is a free printable Grade 3 maths worksheet on rounding where the hundreds stay put, aligned to Common Core standard 3.NBT.A.1. It prints 12 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 1 of 25 · the same problems every time you open this link.

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One paper per pupil

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All 25 sets ask different questions.

Round Three-Digit Numbers to Ten

3.NBT.A.1

NameDate

Round each number.

1.Round 675 to the nearest ten
2.Round 426 to the nearest ten
3.Round 366 to the nearest ten
4.Round 800 to the nearest ten
5.Round 415 to the nearest ten
6.Round 546 to the nearest ten
7.Round 257 to the nearest ten
8.Round 116 to the nearest ten
9.Round 178 to the nearest ten
10.Round 645 to the nearest ten
11.Round 812 to the nearest ten
12.Round 464 to the nearest ten

LessonPrint · 3.NBT.A.1 · Set 1 · free to copy for classroom use

Answer key — Round Three-Digit Numbers to Ten

Set 1. Prints on its own sheet.

  1. 1.680
  2. 2.430
  3. 3.370
  4. 4.800
  5. 5.420
  6. 6.550
  7. 7.260
  8. 8.120
  9. 9.180
  10. 10.650
  11. 11.810
  12. 12.460

Questions about Round Three-Digit Numbers to Ten

What does the Round Three-Digit Numbers to Ten worksheet cover?

It practises rounding where the hundreds stay put — 12 questions for Grade 3, all on Common Core 3.NBT.A.1: Round numbers to the nearest ten or hundred. The instruction to pupils is “Round each number”, and the answer key follows on the next sheet.

Which Common Core standard does Round Three-Digit Numbers to Ten practise?

CCSS.MATH.CONTENT.3.NBT.A.1 — 3.NBT.A.1, in the Number & Operations in Base Ten domain for Grade 3. The published standard reads: “Use place value understanding to round whole numbers to the nearest 10 or 100.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Round Three-Digit Numbers to Ten is written for Grade 3, typically ages 8-9. It is one of the sheets on 3.NBT.A.1, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Round Three-Digit Numbers to Ten come with an answer key?

Yes. All 12 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Round Three-Digit Numbers to Ten can I print?

25 — one per pupil, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Round Three-Digit Numbers to Ten free to print and photocopy?

Yes. Round Three-Digit Numbers to Ten, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

Is there a lesson plan to teach 3.NBT.A.1?

Yes — “Rounding to the Nearest Ten or Hundred” is a 45-minute Grade 3 plan for 3.NBT.A.1, timed section by section, with the misconceptions to expect and an exit ticket. Round Three-Digit Numbers to Ten is the practice that follows it.

More practice for 3.NBT.A.1

Round numbers to the nearest ten or hundred.

Teaching this next? Rounding to the Nearest Ten or Hundred 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.1 of the Common Core State Standards for mathematics.