In KS2 Maths, we learn about rounding numbers. It's like deciding if a number should go up or down! If you're in Year Five or Six, you can round whole numbers to the nearest ten, hundred, or thousand. And guess what? We also round decimal numbers and fractions!
Rounding is like a secret code in maths. If a number is more than halfway, we round up; if it's less, we round down. This goes for whole numbers (like turning 32 into 30) and decimals (3.2 becomes 3). Even fractions get rounded – 2⁄5 goes down, but 3⁄5 goes up!
Test your rounding skills with a fun quiz!
Boost Your Child's Confidence with Quizzes
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You can find more about this topic by visiting BBC Bitesize - How to round decimal numbers
When rounding numbers to the nearest 10, numbers ending in 5 are rounded up
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942 is closer to 900 than to 1,000
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2,845 is much closer to 3,000 than it is to 2,000
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15,762 is only 238 less than 16,000
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When rounding to the nearest 1,000, numbers ending in 500 are rounded up
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7,500 is exactly halfway between 7,000 and 8,000 but would be rounded up rather than down
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Decimals less than .5 are rounded down
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When rounding to the nearest whole number, numbers ending in .5 are round up
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3,798,631 is 201,369 less than 4,000,000
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12 ÷ 3.75 = 3.2 so we have to round 3.2 down to 3. In the other questions we either round the answer up or leave it as it is
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