Starter Choose a starter, main course, sweet and a drink. Work out the basic cost and then how much it is with the service charge using a multiplier.

There are 35 sweets in a bag. Four of the sweets are orange flavour. What percentage of sweets are orange flavour? Start by writing the proportion of orange sweets as a fraction. 4 35 4 out of 35 = Then convert the fraction to a percentage. × 100% = 4 35 11.4%

Petra put £32 into a bank account Petra put £32 into a bank account. After one year she received 80p interest. What percentage interest rate did she receive? To write 80p out of £32 as a fraction we must use the same units. In pence, Petra gained 80p out of 3200p. We then convert the fraction to a percentage. 80 3200 × 100% = 2.5%

30% 33.6% 28.3% 3.8% 4.9% 69.4% 62.5% 21.7% 41.7% 9.5%

Percentage change is where we discover what percentage an amount has increased or decreased by. Original amount x 100

In this case the change is an increase. A computer accessories shop increased the price of one of its printers from £80 to £100. Find the percentage increase in price. £80 £100 Original Price New Price Percentage change = change original amount x 100 In this case the change is an increase. Percentage increase = increase original amount x 100 Percentage increase = 20 80 x 100 = 25%

Find the percentage decrease in the cost of the car in the sale. (1 dp) £34000 £35500 Original Price Sale Price Percentage change = change original amount x 100 Percentage decrease = 1500 35 500 x 100 = 4.2%

Original Amount: £100 New Amount: £110 = 10% increase Original Amount: £250 New Amount: £300 = 20% increase Original Amount: £75 New Amount: £87.50 = 16.7% increase

Is the price of the items now the same as the original price? A man in a shop decides to put his prices up by 10% as he needed more money. However he found this didn’t work and reduced his prices back down by 10% . Is the price of the items now the same as the original price?

Answers 1) 20% decrease 2) 20% increase 3) 12% decrease 4) 10.8% decrease 5) 20% decrease 6) 25% increase 7) 16% increase 8) 7.5% decrease 9) 13% increase 10) 25% increase 11) 33.3% decrease 12) 8.3% decrease 13) 16.7% increase 14) 4% increase 15) 10% increase