Answer all 12 questions. Show your working clearly for each one. A calculator may be used.

1. Calculate 45% of 360.

2. Calculate 17% of 250.

3. Express 27 out of 45 as a percentage.

4. Express 84 out of 120 as a percentage.

5. Increase 640 by 25%.

6. Decrease 780 by 35%.

7. A mobile phone costs £320. Its price increases by 5%. What is the new price?

8. A town has a population of 24,000. The population falls by 3.5% over one year. What is the new population? Give your answer to the nearest whole number.

9. The price of a train ticket increases from £14.40 to £15.84. Calculate the percentage increase.

10. A shop sells 180 items in January and 243 items in February. Calculate the percentage increase in sales.

11. In a class of 32 students, 20 are girls. What percentage of the class are boys?

12. A water butt contains 150 litres. After a dry spell, it contains only 111 litres. Calculate the percentage decrease in the amount of water.

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