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Level 4/5 Booster. Lesson 5B. Ratio and Proportion. Objectives:. Use proportion to solve problems. Use direct proportion in simple contexts. Vocabulary:. proportion. ratio. multiplicative. W/S5.1B. Finding multiplicative relationships:. Example:. or. 8 is ¼ of 32.
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Level 4/5 Booster Lesson 5B Ratio and Proportion
Objectives: • Use proportion to solve problems. • Use direct proportion in simple contexts. Vocabulary: proportion ratio multiplicative
W/S5.1B Finding multiplicative relationships: Example: or 8 is ¼ of 32 34 is twice as big as 17. Find 5 other multiplicative relationships in the target board.
Share the amounts highlighted equally between 2. 24 sweets £60 Share the amounts highlighted equally between 3. 5 kg 8p Share the amounts highlighted equally between 4. £3 M5.2B
Unequal sharing: If my brother and I shared £12 so that he received half as much as I did – how much would we each receive? 2 lots (me) £12 into 3 lots Each lot £4 £12 Me, 2 lots of £4 = £8 1 lot (my brother) My brother, 1 lot of £4 = £4
Share the highlighted amounts so that one person gets half as much as the other. 60p shared unequally is 20p : 40p These amounts have been shared in the ratio 1:2 6 CD’s shared unequally is 2 CD’s: 4 CD’s £15 shared unequally is £5: £10
How many eggs for 4 people? 4 people need 2 eggs How much flour for 6 people? 300g of flour for 6 people How much salt for 10 people? 20g of salt for 10 people
Recipes: Using the information in the box find: Salad for three: 200g lettuce 100g tomatoes 50g onions 50 g cheese The ingredients for salad for 9 people. The ingredients for pie for 8 people. Pie for two: 200g flour 50g margarine 1 egg beaten 500g beef W/S 5.2B
Answers: Recipes: Salad for three: 200g lettuce 100g tomatoes 50g onions 50 g cheese The ingredients for salad for 9 people. 600g lettuce 300g tomatoes 150g onions 150g cheese The ingredients for pie for 8 people. Pie for two: 200g flour 50g margarine 1 egg beaten 500g beef 800g flour 200g margarine 4 eggs beaten 2000g beef
Objectives: • Use proportion to solve problems. • Use direct proportion in simple contexts. Vocabulary: proportion ratio multiplicative