Maths

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What is 25% of 200?
50
1 of 6
What is 10% of 62?
6.2: To find 10% of a number, divide the number by 10. 62 divided by 10 is 6.2.
2 of 6
What is 16% of 30 kg?
4.8kg : 10% of 30 = 3, 5% = 1.5 and 1% = 0.3. 16% = 3 + 1.5 + 0.3 = 4.8.
3 of 6
What is £11 increased by 2%?
£11.22 : To increase an amount by a percentage, find the percentage amount, and then add this onto the original amount. 2% of £11 is 0.22. £11 + £0.22 = £11.22.
4 of 6
What is 500 miles decreased by 20%?
400 miles : To decrease an amount by a percentage, find the percentage amount, and then subtract this from the original amount. 20% of 500 miles is 100 miles. 500 miles - 100 miles = 400 miles.
5 of 6
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Percentages are out of 100, so to find one number as a percentage of another use equivalent fractions and make the denominator 100. \frac{8}{20} = \frac{40}{100} (multiply by 5), so \frac{8}{20} = 40\%.
6 of 6

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Card 2

Front

What is 10% of 62?

Back

6.2: To find 10% of a number, divide the number by 10. 62 divided by 10 is 6.2.

Card 3

Front

What is 16% of 30 kg?

Back

Preview of the front of card 3

Card 4

Front

What is £11 increased by 2%?

Back

Preview of the front of card 4

Card 5

Front

What is 500 miles decreased by 20%?

Back

Preview of the front of card 5
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