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3. Percentages of Quantities Remember: A percentage is simply a fraction out of 100. 23%56%84% 23 100 56 100 84 100

4. 23% 23 100 £56 Calculating percentages using a calculator Example 1: Calculate 23% of £56 23 100 of 56 23100x56= 23 100 x 56 £12.88 Percentages of Quantities Remember: A percentage is simply a fraction out of 100. Calculator

5. 58% 58 100 Calculating percentages using a calculator Example 2: Calculate 58% of 34 kg 58 100 of 34 58100x34= 58 100 x 34 19.72 kg Percentages of Quantities 34 kg Remember: A percentage is simply a fraction out of 100.

6. 87% 87 100 Calculating percentages using a calculator Example 3: Calculate 87% of 45 m 87 100 of 45 87100x45= 87 100 x 45 39.15 m Percentages of Quantities 45 m Remember: A percentage is simply a fraction out of 100.

7. Q 1: Calculate 54% of £89 £48.06 Percentages of Quantities Use your calculator to calculate the following. Q 2: Calculate 17% of 33 m Q 3: Calculate 84% of 350 gQ 4: Calculate 24% of $450 Q 5: Calculate 71% of 28 l Q 6: Calculate 43% of 16 kg Q 7: Calculate 7% of £750Q 8: Calculate 39% of 7.2 km 5.61 m 294 g$108 19.88 l 6.88 kg £52.502.808 km

8. 36% 36 100 £84 A more efficient method using a decimal Example 4: Calculate 36% of £84 36 100 of 84.36x84= 36 100 x 84 £30.24 Percentages of Quantities Remember: A percentage is simply a fraction out of 100. = 0.36

9. 93% 93 100 Example 5: Calculate 93% of 73 kg 93 100 of 73.93x73= 93 100 x 73 67.89 kg Percentages of Quantities 73 kg Remember: A percentage is simply a fraction out of 100. = 0.93 A more efficient method using a decimal

10. 8% 8 100 Calculating percentages using a calculator Example 6: Calculate 8% of 67 m 8 100 of 67.08x67= 8 100 x 67 5.36 m Percentages of Quantities 67 m Remember: A percentage is simply a fraction out of 100. = 0.08

11. Q 1: Calculate 54% of £43 £23.22 Percentages of Quantities Use your calculator with a decimal to calculate the following: Q 2: Calculate 17% of 85 m Q 3: Calculate 84% of 830 gQ 4: Calculate 24% of $674 Q 5: Calculate 3% of 28 l Q 6: Calculate 9% of 16 kg Q 7: Calculate 99% of £750Q 8: Calculate 63% of 7.2 km 14.45 m 697.2 g$161.76 0.84 l 1.44 kg £742.54.536 km

12. 23% 23 100 £56 Calculating general percentages without a calculator Example 1: Calculate 23% of £56 Percentages of Quantities Remember: A percentage is simply a fraction out of 100. = 0.23 Simply complete the multiplication sum with the given numbers then position the decimal point. 5 6 x 2 3 8 2 1 6 01 1 2 8 8 5 6 x 2 3 8 2 1 6 01 1 2 8 8 or if you prefer Position 2 places from right £12.88 Non Calc

13. 47% 47 100 65 m Example 2: Calculate 47% of 65 m Percentages of Quantities Remember: A percentage is simply a fraction out of 100. = 0.47 Simply complete the multiplication sum with the given numbers then position the decimal point. 6 5 x 4 7 5 0 4 5 02 6 3 0 5 5 or if you prefer Position 2 places from right Calculating general percentages without a calculator 6 5 x 4 7 2 6 3 0 5 5 00 54 5 30.05 m

14. 9% 9 100 546 kg Example 3: Calculate 9% of 546 kg Percentages of Quantities Remember: A percentage is simply a fraction out of 100. = 0.09 Simply complete the multiplication sum with the given numbers then position the decimal point. 5 4 6 x 9 4 1 Position 2 places from right Calculating general percentages without a calculator 4 9 49.14 kg

15. Q 1: Calculate 52% of £79 £41.08 Percentages of Quantities Calculate the following without a calculator. Q 2: Calculate 27% of 43 m Q 3: Calculate 74% of 270 gQ 4: Calculate 18% of $490 Q 5: Calculate 85% of 28 l Q 6: Calculate 7% of 16 kg Q 7: Calculate 4% of £750Q 8: Calculate 99% of 7.2 km 11.61 m 199.8 g$88.2 23.8 l 1.12 kg £307.128 km

16. Worksheet1 Q 1: Calculate 54% of £89 Percentages of Quantities Use your calculator to calculate the following. Q 2: Calculate 17% of 33 m Q 3: Calculate 84% of 350 gQ 4: Calculate 24% of $450 Q 5: Calculate 71% of 28 l Q 6: Calculate 43% of 16 kg Q 7: Calculate 7% of £750Q 8: Calculate 39% of 7.2 km

17. Q 1: Calculate 54% of £43 Percentages of Quantities Use your calculator with a decimal to calculate the following: Q 2: Calculate 17% of 85 m Q 3: Calculate 84% of 830 gQ 4: Calculate 24% of $674 Q 5: Calculate 3% of 28 l Q 6: Calculate 9% of 16 kg Q 7: Calculate 99% of £750 Worksheet 2 Q 8: Calculate 63% of 7.2 km

18. Worksheet3 Q 1: Calculate 52% of £79 Percentages of Quantities Calculate the following without a calculator. Q 2: Calculate 27% of 43 m Q 3: Calculate 74% of 270 gQ 4: Calculate 18% of $490 Q 5: Calculate 85% of 28 l Q 6: Calculate 7% of 16 kg Q 7: Calculate 4% of £750Q 8: Calculate 99% of 7.2 km