17092021 Ratio MATHSWATCH CLIP 38 106 107 GRADE

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 L. O. To be able to § Simplify a ratio and identify equivalent ratios § Share amounts in a given ratio Key Words divide, share, proportion, simplify, equivalent, quantity, parts Starter:

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 SHARING IN A GIVEN RATIO

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 Sharing in a given ratio § Put the information given into a diagram, this will help you visualise what is going on § Work out the value of ONE PART of the ratio § Use this to work out what you need Example Simon and Jenny share £ 72 in the ratio of 3 : 5. How much do they each receive? S : J → TOTAL £ 72 3 : 5 → TOTAL 8 parts ONE PART = £ 72 ÷ 8 = £ 9 Simon; 3 parts = £ 9 x 3 = £ 27 Jenny; 5 parts = £ 9 x 5 = £ 45

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 Examples Snoopy and Hippo share 56 coloured discs in the ratio of 5 : 2. How many do they each receive? Divide £ 40 in the ratio 2 : 3. A citrus twist cocktail contains orange juice, lemon juice and lime juice in the ratio 6 : 3 : 1. How much of each type of juice is contained in 750 ml of the cocktail?

MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 Ratio 17/09/2021 Share out £ 240 in the following ratios: 1: 2 3: 5 3: 1 7: 5 15: 1 13: 11 1: 1

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 Task 1. Share £ 48 between Alan and Barbara in the ratio 2 : 1 £ 32 £ 16 2. Share £ 60 between Laura and Robert in the ratio 1 : 3 £ 15 £ 45 3. Share 80 marbles between Stuart and Carl in the ratio 4 : 1 64 16 4. Share 91 sweets between Peter and Becky in the ratio 4 : 3 52 39 5. Share 70 coloured beads between Janet and Christine in the ratio 3 : 42 2 28 £ 45 £ 75 6. Share £ 120 between Carly and Paul in the ratio 3 : 5

17/09/2021 Ratio MATHSWATCH CLIP 38, 106, 107 GRADE 2, 3 Task 1. Share 350 ml of milk between a cat and her kitten in the ratio 4 : 3200 ml 150 ml 2. Share 1. 2 litres of milk between a dog and a cat in the ratio 7 : 5 700 ml 500 ml 3. Share 240 g of sweets between Alison and Stephen in the ratio 3 : 90 5 g 150 g 4. Share 120 g of cereal between Stuart and Julie in the ratio 3 : 7 84 g 36 g 5. Paul is 12 and Gemma is 15. They share a £ 5400 inheritance from their aunty in the £ 2400 £ 3000 ratio of their ages. How much do they each receive? 6. John scored 15 points and Fiona scored 17 points in a TV quiz show. £ 1275 They shared £ 1445 the prize money of £ 2720 in ratio of points scored. How much did they each receive?