Percentages Recap

Calculating Percentages

Method 1 Method 2

Caluclate percentages in your head by dividing them up into ones you know.

Eg, 29% of 85

10% of 85 = 8.530% of 85 = 8.5 × 3 = 25.51% of 85% = 0.85

29% = 25.5 – 0.85 = 24.65

Caluclate percentages using a calculator by turning the percentage into a decimal.

Eg, 29% of 85

2 9 1 0 0 8 5÷ ×

= 24.65

• Now try some questions without using a calculator. (Method 1.)

15% 45%

17.5%

14% 78% 19%

110%

81%

£10.95£32.85

£59.13

£80.30

£13.87£56.94

£10.22

£12.78

• Now try some questions using a calculator. (Method two.)

Questions

Difficulta) 42% of £500b) 63% of 400c) 31% of £800d) 59% of £700e) 22% of £900f) 48% of £650g) 76% of £850h) 94% of £250

Mediuma) 30% of 500b) 76% of 200c) 55% of 120d) 81% of 240e) 35% of 80f) 45% of 60g) 95% of 130h) 19% of 300

Easya) 15% of 200b) 26% of 400c) 5% of 700d) 20% of 50e) 60% of 140f) 40% of 30g) 15% of 60h) 45% of 80

3010435108412936

15015266194.42827123.557

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