Sale Prices Dad wants to buy a laptop for his son for Christmas. He uses the internet to compare the price in various stores. In PC Express the laptop.

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Sale Prices Dad wants to buy a laptop for his son for Christmas. He uses the internet to compare the price in various stores. In PC Express the laptop is priced at £479, whereas LAP Gear are offering the same laptop for £520 with a 12.5% reduction. Dad sketches a bar to help him work out the price in LAP Gear. He starts like this:

Sale Prices On your whiteboards: Copy the bar and complete his calculation.

Sale Prices Which company sells the laptop cheaper?

Sale Prices Draw bars to help you work out The price of a £1500 computer after a 15% reduction b) The price of a £600 dishwasher after a 12% reduction c) The price of a £ 1250 holiday with 8% off d) The price of a £2500 car with 21% off

Sale Prices - challenge Sue is looking to buy a scooter for her daughter. She finds the one she wants on offer in three different on line stores. The offers are as follows: Which store is the cheapest for this scooter?

Sale Prices - challenge Is it the best deal for any starting price? How do you know?

Find the error… Question: In a sale, a television has 25% off. The sale price is £600. What was the price before the sale? A student says the answer is £750 and explains: “If 25% was taken off, then 25% must be added on. 25% of £600 is a quarter of £600, which is £150, so if you add that on, it is £750.” The teacher says this is incorrect. Can you use a bar to show why it is incorrect, and find the correct answer?

Working backwards Draw bars to help you work out The price of a £ computer after a 40% reduction is £450 The price of a £ dishwasher after a 20% reduction is £480 The price of a £ holiday with 15% off is now £680