Rounding to the Nearest 10 or 100 Worksheets

Free printable worksheets with answer keys. Pick a level, preview the questions, then open the sheet to swap or delete any single question.

Grade 3CCSS 3.NBT.A.1Answer key includedPDF · Print

Open in generator Start with an easy sheet

Easy: Two-digit numbers to the nearest 10, with a number line

Preview shows 6 of 12 questions. Every sheet is new; open it to change any question.

Worksheet variations

Find the two tens (or hundreds) the number sits between and decide which it is closer to. Look at the digit to the right of the rounding place: 5 or more rounds up, 4 or less rounds down. A number exactly halfway rounds up.

EasyTwo-digit numbers to the nearest 10, with a number line MediumThree-digit numbers to the nearest 10 HardTo the nearest 100, including halfway and 950–999

How to solve it: a worked example

Round each number.

Start
17 is between 10 and 20
The ones digit is 7, so round up
Answer

Common mistakes to watch for

Rounding 350 down to 300; a halfway number rounds up.
Changing only the rounding digit and keeping the digits after it, as in 467 → 567.
Rounding 960 to the nearest hundred as 900 or 100 instead of 1000.

Tip: tick “Step-by-step answer key” in the generator to print each step for marking.

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FAQ

Is every worksheet different?

Yes. Numbers are generated each time, and the answer key is calculated for that sheet. Swap any single question and its answer updates too.

Can I mix rounding to the nearest 10 or 100 with other skills?

Yes. In the generator, add more skills; each gets its own section on the sheet with its own instructions.

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