Multiplying and Dividing by 10, 100 and 1000 Worksheets
Free printable multiplying and dividing by 10, 100 and 1000 worksheets with answer keys. Multiply and divide whole numbers and decimals by 10, 100 and 1000…
Using this page
Multiply and divide whole numbers and decimals by 10, 100 and 1000, such as 3.45 × 100 and 72 ÷ 1000. The Common Core's Grade 5 standard asks students to explain the patterns in zeros and decimal points when multiplying or dividing by powers of 10. This is the basis for converting metric units. Suits around Year 5 and Year 6 in Australia and Grade 5 in the US (Common Core 5.NBT.A.2), but use whatever level fits the child.
Tips
- Line up the decimal points before adding or subtracting.
- Estimate first: 4.75 + 2.6 is about 5 + 3 = 8, so 7.35 makes sense.
- Use money as a model: $4.75 + $2.60.
- Read decimals with place value: 0.35 is three tenths and five hundredths.
Worked example
3.45 × 100: each digit moves two places to the left, so 3.45 becomes 345. 72 ÷ 1000: each digit moves three places to the right, so 72 becomes 0.072. The number of zeros tells you how many places.
Common mistakes
Thinking 'add a zero' works for decimals: 3.45 × 10 is 34.5, not 3.450.
Moving the wrong way. Multiplying makes the number bigger, dividing makes it smaller.
How to use this generator
Choose the options above the sheet: the number of questions and the settings for this kind of worksheet. Every change makes a new sheet straight away, and New worksheet gives a different set of questions with the same settings.
Each sheet has a worksheet number printed at the top. Type the same number later, or keep the page link, to print exactly the same questions and answer key again. Leave Answer key page ticked to print the answers on a second page, then press Print. Every printed page carries the makekite logo and web address.
Common questions
Is the decimal point moving, or the digits?
Strictly the digits move to new place values and the point stays put, but both descriptions give the same answer.
Can I start with easier numbers?
Yes. Choose tenths on the decimals sheet, or whole numbers on the powers of ten sheet, then move up.
Can I print the same worksheet again?
Yes. Note the worksheet number printed at the top, or keep the link in your browser's address bar, which ends with that number. Entering it later gives the same questions and answers.
Is it free?
Yes. There is no sign-up, and nothing you choose is sent anywhere: the sheets are made in your browser.