Explain how to multiply and divide a number by 10, 100 and 1,000
I can explain how to multiply and divide a number by 10, 100 and 1,000
Explain how to multiply and divide a number by 10, 100 and 1,000
I can explain how to multiply and divide a number by 10, 100 and 1,000
Lesson details
Key learning points
- When you multiply by 10, 100 or 1,000, the digits move one, two or three places to the left respectively.
- When you divide by 10, 100 or 1,000, the digits move one, two or three places to the right respectively.
Common misconception
Children may 'add' a zero when multiplying or vice versa when dividing. Children may place a zero at the end of the decimal fraction when multiplying, or vice versa when dividing.
When we 'add' zero, the value of the number does not change. When we multiply or divide by a power of 10, we need to move all the digits the appropriate spaces to the left/right even if this means bridging one and moving into the decimal places.
Keywords
Tenth - One-tenth is one part in ten equal parts.
Hundredth - One-hundredth is one part in one hundred equal parts.
Thousandth - One-thousandth is one part in one thousand equal parts.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
900
90
9
20
200
0
7,000
7
5
500
50
30
Exit quiz
6 Questions
7.2
720
48.2
482
9.1
91