In KS2 Maths, kids will explore exciting decimal numbers! In Year Four, they'll dive into tenths, learning where numbers belong in decimal land. Adding and subtracting with decimals will become a breeze, and they'll even get the hang of rounding these special numbers up or down.
Decimal numbers aren't whole, like 3 or 7. They're a bit fancier, with dots called decimal points. Just like adding 11 + 12, adding 1.1 + 1.2 is cool! Decimals can also be buddies with their closest whole numbers, like 4.7 hanging out with 5. But 4.4 prefers to chill with 4. We call this rounding up or down.
Feeling adventurous? Take this fun quiz to show off your skills in adding, subtracting, and rounding decimal numbers!
Are Quizzes the Key to Children's Success? Find Out
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You can find more about this topic by visiting BBC Bitesize - What are decimals?
Tenths are the column after the decimal point
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A number 7 in the tenths column means 7⁄10
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Whole numbers are on the left of the decimal point
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We round down numbers less than .5 and we round up numbers equal to or higher than .5
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Just like 43 + 4 = 47,
4.3 + 0.4 = 4.7 |
Just like 8 - 6 = 2
0.8 - 0.6 = 0.2 |
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3⁄10 is less than 9⁄10
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All the other numbers have less than 4 ones
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There are 100 pence in £1 so we divide 345 by 100 which gives 3.45 or £3 and 45p
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There are 100cm in a metre. Therefore 423cm is 4m and 23cm or 4.23m
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