Rounding to the Nearest 10 Worksheets for 3rd Grade

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Grade 3MathPlace Value & RoundingCCSS 3.NBT.A.1

Skill: Rounding two- and three-digit numbers to the nearest ten

Preview of the Rounding to the Nearest 10 printable worksheet
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Teaching tips and what to try next

Works for third graders who can find the tens on either side of a number on a number line. Children sometimes change the hundreds digit by mistake, so ask them to copy the hundreds first and decide only the tens. Add rounding to hundreds in Rounding to the Nearest 10 and 100, then use rounded numbers to check answers in Estimating Sums and Differences.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

Rounding to the nearest ten is a tool for estimating and for checking whether an answer makes sense. 47 is closer to 50 than to 40, so it rounds to 50. Third graders are expected to use place value understanding to round whole numbers to the nearest 10 or 100, and this third grade worksheet gives focused practice on tens before children move on to hundreds.

The page has two parts. Part A has six two-digit numbers, which is a gentle start. Part B has twelve three-digit numbers, where children keep the hundreds digit and decide whether the tens digit stays or goes up by one. None of the numbers is already a multiple of ten, so every problem takes a real decision. Numbers that end in 5 round up by the usual rule, and a number such as 396 rounds up into the next hundred, which is a good stretch when it appears. Each of the ten versions has new numbers and its own answer key.

How to use it: sketch a short number line from 40 to 50 and mark 47 on it, then ask which ten it is closer to. After a few problems, switch to the rule: look at the ones digit, and if it is 5 or more, round up. Have your child say the two tens the number sits between before writing the answer.

The answer key shows every rounded number. For rounding to the nearest hundred as well, try our Rounding to the Nearest 10 and 100 worksheet. For using rounding to estimate, try our Estimating Sums and Differences worksheet.