5th grade
Powers of Ten and Exponents
Twenty-four problems with 10², 10³ and 10⁴: write the number, multiply by a power of ten and divide by one.
Math worksheet · Place value and number decomposition
Ten Times as Much, One Tenth Of
Twenty questions like “700 is ___ times 70” and “1/10 of 5,000 is ___”. A digit is worth ten times more one place to the left.
- Grade level
- Grades 4–5
- Time
- About 20 minutes
- Answer key
- Yes, page 2 of the PDF
- Kids practice
- Place value, Expanded form, Comparing and ordering numbers, Rounding
What kids do
“One place to the left is 10 times as much. One place to the right is one tenth as much.”
Printed on the sheet:
- 1 10 times 300 is
- 2 1/10 of 800 is
- The 2 in 200 is worth the 2 in 20.
- 5 10 times 400 is
- 7 10 times 9,000 is
- 11 1/10 of 300 is
- The 8 in 80,000 is worth times the 8 in 8,000.
- The 7 in 7,000 is worth times the 7 in 700.
Teacher tip
Use a place value chart and slide one digit left and right to show ten times and one tenth.
How to use it
- Read each number out loud as a class so kids hear the place names.
- Let kids use a place value mat or a folded paper chart under their sheet.
- Do the first problem together under a document camera, then let kids finish on their own.
Watch for
Rounding the wrong digit. Have kids underline the place they are rounding to first.
Talk about it
- Why do we round? When is an estimate good enough?
- Which problem was the hardest? What made it hard?
Take it further
Make number riddles: “I have 3 hundreds, no tens and 7 ones.”
US Letter, prints well in black and white. Free for home and classroom use: print as many copies as you need.
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1st grade
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Twelve number bonds. Kids find the missing part or the whole, breaking numbers up to 20 into two parts.
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