Place value and rounding

Multiplying and dividing by powers of 10

Name: ______________________________Date: ______________Score: ______ / 20

1.
How many zeros are there in 10⁴?
2.
Work out 8.4 × 10³
3.
Work out 21 000 ÷ 10⁴
4.
To multiply by 10³, which way do you move the decimal point?
1. A3 places to the right
2. B3 places to the left
3. C4 places to the right
5.
A distance is 4.29 km. How many metres is that? (× 10³)
m
6.
How many zeros are there in 10²?
7.
Work out 0.672 × 10⁴
8.
Work out 5 100 ÷ 10³
9.
To multiply by 10⁵, which way do you move the decimal point?
1. A5 places to the left
2. B5 places to the right
3. C6 places to the right
10.
A distance is 1.75 km. How many metres is that? (× 10³)
m
11.
How many zeros are there in 10³?
12.
Work out 5.8 × 10²
13.
Fill in the missing number: 49 × 10³ = ▢
14.
A distance is 8.97 km. How many metres is that? (× 10³)
m
15.
Crossing four zeros off the end of 40000 gives 40000 ÷ 10⁴.
True False
16.
Work out 0.241 × 10⁴
17.
Work out 1 000 000 ÷ 10⁵
18.
Fill in the missing index: 47 × 10▢ = 47000
19.
A distance is 6.43 km. How many metres is that? (× 10³)
m
20.
What is the value of 10⁵?

Answer key

Place value and rounding — Multiplying and dividing by powers of 10