Saturday, 04 June 2016 Percentages Starter 1. 26 x 5 = 2. 48 x 7 = 3. 32 x 12 = 4. 43 x 23 = 5. 65 x 52 = 130 336 384 989 3380.

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Presentation transcript:

Saturday, 04 June 2016 Percentages Starter x 5 = x 7 = x 12 = x 23 = x 52 =

Percentage Lesson Objective By the end of the lesson I should be able to: Find the percentage of quantities mentally Must multiply by 10’s and.01 and.001 Should Find the sale price of an item Could Find the percentage increase of an item

10% of 80 =80 ÷ 10 = 8 1% of 80 =80 ÷ 100 =0.8 50% of 80 =802 = ÷ 40 72% of £80 =50% of 80 = = 20% of 80 = (2 x 10%) = 2% of 80 = (2 x 1%) = £57.60 Find 1) 43% of £250 2) 17% of 903) 28% of Cmp 3 pg 46 ex 5.6

In a sale there is 20% off a pair of trainers that originally cost £110. How much do these trainers cost in the sale? 10 % of 250 =25 In a sale there is 10% off a TV that originally cost £250. How much does the TV cost in the sale ? 250 – 25 = % of 110 =11 x 2 = 110 – 22 = 88 22

A clothes shop has a sale where everything is 20% off. Find the sale price of these items. ItemOriginal price Discount Sale price Trousers£25 Skirt£10 Jumper£40 Socks£3 T- shirt£12 Shorts£15 Vest£8 Tracksuit£40 5£ £8 £32 £2.40 £9.60 £12 £6.40 £32

A ticket for the cup final originally cost £130 it has now increased by 60%. How much does the ticket now cost? 15% of 80 =12 Sarah gets paid £80 a month for her paper round. She has received a 15% increase. How much is she now paid? = % of 130 =13 x 6 = =

An electrical shop has had to increase all its prices by 15%. How much would these items now cost? ItemOriginal price increase New price TV£900 Stereo£320 DVD player£110 Microwave£80 X box£150 MP3 player£22 Car stereo£160 Vacuum£ £368 £ £92 £ £25.3 £184 £ £1035

Description What to do? You will need the worksheet There are six offers and four different sets of circumstances Decide which is the best buy in each case Explain Justify how you made your decisions Convince another group who made a different choice that yours is a sensible idea

Cola Offer 1 50cl bottle (+ 20% free) Price 72p Cola Offer 3 6 pack 33cl can Cost £2.40 Get second pack at half price Cola Offer 5 1 litre bottle Cost £1.08 New bottle extra 50% free Cola offer 2 2 litre bottle Usually £1.60 New price 10% off Cola Offer 4 33cl can Price 42p Buy 3 get one free Cola Offer 6 4 x 50cl bottle pack Price 60p per bottle 100cl=1litre