10 printable sets · answer key on every set

Powers of 10 Worksheets

CCSS 5.NBT.A.2
20 problems per set
Answer key included

What this skill is

Multiplying and dividing by 10, 100 and 1,000 moves the digits, and an exponent shows how many tens are multiplied together.

When it comes up: Fifth grade.

The mistake to watch for

Adding zeros to a decimal: 3.4 × 100 is 340, not 3.400. The digits move; the zeros are only placeholders.

How to help

Count the zeros: × 100 moves each digit 2 places to the left, and ÷ 100 moves each digit 2 places to the right.

Next: Decimal operations.

A worked example

3.4 × 100 = 340: each digit moves 2 places left. 560 ÷ 100 = 5.6: each digit moves 2 places right. 10³ means 10 × 10 × 10 = 1,000.

Words to know

power: A number multiplied by itself. 10³ is a power of ten.
exponent: The small raised number that tells how many times to multiply. In 10³, the exponent is 3.
digit: One of the ten number symbols 0 to 9. The number 47 has two digits.
decimal: A number written with a point to show parts smaller than one, like 0.5.
place: Where a digit sits in a number: ones, tens or hundreds.

Practice

Solve.

Showing Set 1 · 20 problems

10² = ___
10 × 10 × 10 × 10 = 10^___
10³ = ___
631 ÷ 10 = ___
229 ÷ 100 = ___
10⁴ = ___
775 ÷ 10 = ___
416 ÷ 10 = ___
882 ÷ 1,000 = ___
10 × 10 = 10^___
836 ÷ 1,000 = ___
6.1 × 100 = ___
10 × 10 × 10 = 10^___
8.3 × 100 = ___
841 ÷ 10 = ___
50 ÷ 100 = ___
767 ÷ 1,000 = ___
84 ÷ 10 = ___
350 ÷ 1,000 = ___
4.3 × 100 = ___

Download this set20 problems · answer key included PDF

Answer key

100
4
1,000
63.1
2.29
10,000
77.5
41.6
0.882
2
0.836
610
3
830
84.1
0.5
0.767
8.4
0.35
430

All 10 sets

Each set is a different list of 20 problems with its own answer key. Use the buttons above to look at one on this page, or download any of them as a PDF.

How these sheets were made

Problems are generated for each set and checked against 5.NBT.A.2 before the sheet is built — no duplicates, and every problem falls inside the standard's number range.