Maths Quiz - Decimal Numbers (Year 5) (Answers)
In KS2 Maths, kids learn about decimal numbers. In Year Five, they explore the value of digits in decimals, like tenths and hundredths. Plus, they practice adding and subtracting decimals. Rounding decimals up or down becomes a breeze, and they get comfy with sums involving decimal measurements such as metres/cm or £/pence.
Decimal numbers are smaller than one and come after a decimal point. They're like another way of writing fractions. For example, a quarter of pizza as a fraction is 1/4, but as a decimal, it's 0.25. The 2 in 0.25 means 2 tenths, and the 5 is 5 hundredths.
Can you spot the difference between tenths and hundredths? How about rounding a number to two decimal places? Test your decimal number skills by playing this quiz!
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You can find more about this topic by visiting BBC Bitesize - Comparing and ordering decimals
In decimals the first column after the ones is tenths and the second column is hundredths
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Remember - tenths, hundredths, thousandths
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Forty two hundredths is equivalent to four tenths and two hundredths
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The numbers are going up by 0.02, or 2⁄100 every time
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Just like 357 + 3 = 360
3.57 + 0.03 = 3.6 |
Just like 7 - 5 = 2
0.07 - 0.05 = 0.02 |
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1⁄100 is less than 2⁄100, 12⁄100 and 102⁄100
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35⁄100 is larger than 30⁄100, 5⁄100 or 3⁄100
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There are ten hundredths in a tenth so half of one tenth is 5 hundredths
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There are 10mm in 1cm therefore we multiply by 10 to find the answer
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