Rounding to the nearest ten and hundred
This Grade 3 worksheet practices rounding to the nearest ten and hundred (Common Core 3.NBT.A.1; Alberta Number 1).
24 rounding to the nearest ten and hundred problems for Grade 3, with an answer key. Free printable PDF.
24 problems · answer key on the last page · each version has different numbers · Print from the browser
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On this sheet
- Round 18 to the nearest ten. — answer: 20
- Round 21 to the nearest ten. — answer: 20
- Round 91 to the nearest ten. — answer: 90
How to teach it
- Each place is ten times the place to its right: tenths are ten times hundredths, ones are ten times tenths.
- To compare decimals, line up the decimal points and compare place by place from the left.
- To round, look at the digit one place to the right: 5 or more rounds up.
- To add or subtract decimals, line up the decimal points, then work as with whole numbers.
Questions teachers ask
- How many problems are on this worksheet?
- 24 on one page, with the answer key on the last page.
- What grade and standard is it for?
- Grade 3. Common Core: 3.NBT.A.1. Alberta: Number 1.
- Can I print more than one version?
- Yes. Every version has different numbers and its own answer key. Use “Make another version” for a new one; the same version always prints the same.
- When do students learn decimals?
- In the Common Core, tenths and hundredths start in Grade 4 (4.NF.C.6), place value to thousandths, rounding and all four operations with decimals are Grade 5 (5.NBT.A.3, 5.NBT.A.4, 5.NBT.B.7), and fluency with decimal operations is Grade 6 (6.NS.B.3).
- What is expanded form?
- A number written as the sum of the value of each digit: 4,072 is 4,000 + 70 + 2, and 3.25 is 3 + 0.2 + 0.05.
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