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Maths Quiz - Decimal Numbers (Year 6) (Questions)

In KS2 Maths, kids learn about decimal numbers. In Year Six, you'll know decimal place value to three spots - tenths, hundredths, and thousandths. Plus, you'll be a pro at adding, subtracting, and rounding decimals. Think metres/cm or £/pence!

Decimals have a point - left side has whole numbers, right side has tenths, hundredths, and thousandths. Decimals are like a cool way to talk about numbers smaller than one. Instead of 1/8, say 0.125: 1 tenth, 2 hundredths, 5 thousandths. Decimals make maths with fractions easier - like metres and kilos, all using tenths, hundredths, and thousandths!

Try a fun quiz to test your decimal number skills!

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1. What does the digit 1 represent in 0.251?
[ ] 1 tenth
[ ] 1 thousandth
[ ] 1 one
[ ] 1 hundredth
2. What is the figure 8 worth in 2.089?
[ ] 8 ones
[ ] 8 hundredths
[ ] 8 tenths
[ ] 8 thousandths
3. Which is the decimal fraction equivalent to nine and two thousandths?
[ ] 9.002
[ ] 9.2
[ ] 9.02
[ ] 0.092
4. What is the next number in the sequence 0.007, 0.008, 0.009?
[ ] 0.001
[ ] 0.1
[ ] 0.01
[ ] 1
5. How is 0.023 changed to 0.23?
[ ] Multiply by 10
[ ] Divide by 100
[ ] Divide by 10
[ ] Multiply by 100
6. How is 0.7 changed to 0.007?
[ ] Multiply by 10
[ ] Divide by 100
[ ] Divide by 10
[ ] Multiply by 100
7. Which is the smallest of these numbers?
[ ] 0.001
[ ] 0.1
[ ] 0.01
[ ] 0.011
8. Which is the largest of these numbers?
[ ] 0.3
[ ] 0.003
[ ] 0.033
[ ] 0.03
9. Which is a decimal fraction halfway between 6.52 and 6.53?
[ ] 6.55
[ ] 6.521
[ ] 6.525
[ ] 6.531
10. What is 1.23m + 63cm?
[ ] 1.86m
[ ] 74.23m
[ ] 7.53m
[ ] 186m

You can find more about this topic by visiting BBC Bitesize - Thousandths as decimals

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Maths Quiz - Decimal Numbers (Year 6) (Answers)
1. What does the digit 1 represent in 0.251?
[ ] 1 tenth
[x] 1 thousandth
[ ] 1 one
[ ] 1 hundredth
Remember - tenths, hundredths, thousandths
2. What is the figure 8 worth in 2.089?
[ ] 8 ones
[x] 8 hundredths
[ ] 8 tenths
[ ] 8 thousandths
2.089 is 2 ones, 0 tenths, 8 hundredths and 9 thousandths
3. Which is the decimal fraction equivalent to nine and two thousandths?
[x] 9.002
[ ] 9.2
[ ] 9.02
[ ] 0.092
Ones are on the left of the decimal point
4. What is the next number in the sequence 0.007, 0.008, 0.009?
[ ] 0.001
[ ] 0.1
[x] 0.01
[ ] 1
The numbers are going up by 0.001, or 1⁄1,000 every time
5. How is 0.023 changed to 0.23?
[x] Multiply by 10
[ ] Divide by 100
[ ] Divide by 10
[ ] Multiply by 100
When we multiply by 10 the digits move one place to the left
6. How is 0.7 changed to 0.007?
[ ] Multiply by 10
[x] Divide by 100
[ ] Divide by 10
[ ] Multiply by 100
When we divide by 100 we move the digits two places to the right
7. Which is the smallest of these numbers?
[x] 0.001
[ ] 0.1
[ ] 0.01
[ ] 0.011
1⁄1,000 is less than 11⁄1,000, 1⁄100 or 1⁄10
8. Which is the largest of these numbers?
[x] 0.3
[ ] 0.003
[ ] 0.033
[ ] 0.03
3⁄10 is larger than 3⁄100, 33⁄1,000 or 3⁄1,000
9. Which is a decimal fraction halfway between 6.52 and 6.53?
[ ] 6.55
[ ] 6.521
[x] 6.525
[ ] 6.531
There are 10 thousands in a hundredth so half of a hundredth is 5 thousandths
10. What is 1.23m + 63cm?
[x] 1.86m
[ ] 74.23m
[ ] 7.53m
[ ] 186m
Convert the cm into metres and you will have 1.23 + 0.63 giving 1.86m
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