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Level 3-4 Numbers - Decimals - Powers of 10
When multiplying decimals by 100 the digits move two places to the left.

Level 3-4 Numbers - Decimals - Powers of 10

Let's talk about decimal numbers - they're the cool ones smaller than 1 and hang out after a decimal point. Decimals are like the superheroes of fractions, giving them a different look. Imagine a quarter - as a fraction, it's 1⁄4, but as a decimal, it's 0.25. This KS3 Maths quiz is your guide to understanding multiplying and dividing decimals by the awesome powers of 10, like 10, 100, or 1,000.

Boost Your Child's Confidence with Quizzes

1 .
What is 68.72 / 10?
6
6.872
687.2
6,872
Just shift the digits one place to the right
2 .
When dividing decimals by 10, how many places do the digits move?
0
1
2
3
1 zero means move 1 place
3 .
What is 7.75 x 100?
0.775
0.7
77.5
775
To multiply by 100 move the digits two places to the left
4 .
What is 88.3 / 100?
0.883
8.083
8.83
883
Bear in mind the digits move, not the decimal point
5 .
What is 4.65 x 10?
0.465
46.5
465
4,650
Just shift the digits one place to the left
6 .
What is 0.04 / 10?
0.004
004
00.4
4
Note that you need to add a zero before the decimal point
7 .
What is 0.08 x 10?
0
0.1
0.8
8
Remember it's the digits that move one place to the left when multiplying by 10
8 .
What is 44.87 x 100?
4.4
449
4,487
4,490
To multiply by 100 move the digits two places to the left
9 .
When multiplying decimals by 100, how many places do the digits move?
0
1
2
3
2 zeros before the decimal means move 2 places
10 .
What is 692.14 / 100?
0.69214
6.9214
69.214
6,921.4
To divide by 100 move the digits two places to the right
You can find more about this topic by visiting BBC Bitesize - Decimals

Author:  Frank Evans

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