Percentages (Edexcel GCSE Maths): Quizzes

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Percentages - GCSE revision guide
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What is the first step to find 15%15\% of £46£46?

Convert 15%15\% to decimal: 15÷10015 \div 100

What multiplier is used for a 40%40\% decrease?

0.60.6

What multiplier is used for a 15%15\% increase?

1.151.15

To express 4040p as a percentage of £3.34£3.34, what must you do first?

Convert both to the same units

In the percentage change formula, what goes in the denominator?

The original value

A house increases by 20%20\% to £72,000£72,000. What percentage does £72,000£72,000 represent?

120%120\%

To find the original value when £72,000£72,000 is 120%120\%, what is the next step?

Divide £72,000£72,000 by 120120

Regina invests £380£380 at 3%3\% simple interest per year. How much interest per year?

£11.40£11.40

A trader buys for £5£5 and sells for £7£7. What is the percentage profit?

40%40\%

What is a key characteristic of simple interest?

Same amount of interest each period

A toaster costs £68£68 and is reduced by 40%40\%. What is the new price?

£40.80£40.80

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