T2-M-102-Ratio-and-Proportion-Powerpoint ver 4...
Transcript of T2-M-102-Ratio-and-Proportion-Powerpoint ver 4...
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Ratio: 3 girls to 4 boys (3:4)
Proportion: Girls 3 in 7Boys 4 in 7
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Ratio: 3 girls to 4 boys (3:4)
6 girls
How many boys if there are:
8 boys
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Ratio: 3 girls to 4 boys (3:4)
9 girls
How many boys if there are:
12 boys
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Ratio: 3 girls to 4 boys (3:4)
12 girls
How many boys if there are:
16 boys
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Work out the ratio from the number of sweets
Blue Sweets Pink Sweets
8 2
20 5
48 12
4 1
16 4
80 20
Ratio: 4 blue sweets to 1 pink sweet (4:1)
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© Corbettmaths 2018
Primary Practice Questions
Proportion
Tips • Read each question carefully • Attempt every question. • Check your answers seem right. • Always show your workings
Recap
Remember • There are daily questions found at
www.corbettmathsprimary.com/5-a-day/
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1. Emily buys 3 pencils for 90p.
© Corbettmaths 2018
How much does one pencil cost?
How much would six pencils cost?
How much would four pencils cost?
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2. Kelly is making scones.Here is a list of ingredients to make 8 scones.
Kelly wants to make 16 scones.
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How much butter should Kelly use?
g
How much milk should Kelly use?
ml
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3. Jack and Harry are waiters in a restaurant.
They are both paid the same amount of money for each hour they work.
Jack worked 4 hours and is paid £24
Harry worked 5 hours
4. On a map, 1cm represents 4 miles.
The distance between two towns on the map is 8cm
© Corbettmaths 2018
How much money is Harry paid?
£
Work out the distance between the two towns.
miles
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5. On a map, 1cm represents 3 kilometres.
The distance between two towns is 12 kilometres
6. Rebecca is making Chilli Con Carne.Here is a list of ingredients to serve 6 people.
Rebecca wants to make enough Chilli Con Carne to serve 2 people
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On the map, what is the distance between the two towns?
cm
How many grams of tomatoes does Rebecca need?
g
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7. Ella takes part in an archery lesson
For every 4 arrows fired, only 3 hit the target.Altogether Ella hit the target 24 times.
8. On a map, 1cm represents 20 miles.
The distance between two towns is 130 miles.
© Corbettmaths 2018
How many arrows did Ella fire?
On the map, what is the distance between the two towns?
cm
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9. Oscar is making fish pie.Here is a list of ingredients for 5 people.
Oscar wants to make enough fish pie for 2 people.
© Corbettmaths 2018
How much haddock should Oscar use?
g
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10. A boat is 12 metres long and 8 metres tall.
Victoria makes a scale model of the boat.
Her model is 20 centimetres tall
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How long is her model?
cm
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11. Freya is making shortbread biscuits.
Freya has only 100g of butter.
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How much caster sugar should Freya use?
g
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13. For every seven 50p coins, Alan has six 20p coins.
Alan has £18 in 20p coins.
© Corbettmaths 2018
How much money does Alan have altogether?
£
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Ratio and ProportionWrite the correct answer:
1. Beefmustbecookedfor30minutesforevery1kg.Howlongwouldittaketo cook: 2kgs? 4kgs? 6kgs? 8kgs?
2. Tomake1litreofjam,Iuse100strawberries. HowmanystrawberriesdoIneedtomake:
2litres? 3.5litres?
3. Ineedtocollect30stickers.Eachbagofcrispscontains3stickers. HowmanybagswillIneedtobuy?
4. Themotherbearisfed4fishforevery2fishthathercubisfed.Howmanyfishwouldthecubgetifthemotherisfed:
10fish? 20fish?
5. Thereare10boysforevery30girlsatthedisco. Howmanyboysarethereifthereare: 60girls? 90girls?
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Ratio and ProportionWrite the correct answer:
1. Beefmustbecookedfor40minutesforevery1kg.Howlongwouldittaketo cook: 2kgs? 4kgs? 6kgs? 8kgs?
2. Tomake½litreofjam,Iuse50strawberries. HowmanystrawberriesdoIneedtomake:
2litres? 3litres?
3. Ineedtocollect80stickers.Eachbagofcrispscontains4stickers. HowmanybagswillIneedtobuy?
4. Themotherbearisfed5fishforevery2fishthathercubisfed.Howmanyfishwouldthecubgetifthemotherisfed:
10fish? 20fish?
5. Thereare6boysforevery9girlsatthedisco. Howmanyboysarethereifthereare: 27girls? 72girls?
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Ratio and Proportion AnswersWrite the correct answer:
1. Beefmustbecookedfor30minutesforevery1kg.Howlongwouldittake to cook: 2kgs?60 minutes/1 hour 4kgs?120 minutes/2 hours 6kgs?180minutes/3 hours 8kgs?240 minutes/4 hours
2. Tomake1litreofjam,Iuse100strawberries. HowmanystrawberriesdoIneedtomake: 2litres?200 strawberries3.5litres?350 strawberries
3. Ineedtocollect30stickers.Eachbagofcrispscontains3stickers. HowmanybagswillIneedtobuy? 10 bags
4. Themotherbearisfed4fishforevery2fishthathercubisfed.Howmanyfishwouldthecubgetifthemotherisfed: 10fish?5 fish20fish?10 fish
5. Thereare10boysforevery30girlsatthedisco. Howmanyboysarethereifthereare: 60girls?20 boys90girls?30 boys
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Ratio and Proportion AnswersWrite the correct answer:
1. Beefmustbecookedfor40minutesforevery1kg.Howlongwouldittaketo cook: 2kgs?80 minutes/1 hour 20minutes 4kgs?160 minutes/2 hours 40 minutes 6kgs?240 minutes/4 hours 8kgs?320 minutes/5 hours 20 minutes
2. Tomake1/2litreofjam,Iuse50strawberries. HowmanystrawberriesdoIneedtomake: 2litres?200 strawberries3litres?300 strawberries
3. Ineedtocollect80stickers.Eachbagofcrispscontains4stickers. HowmanybagswillIneedtobuy? 20 bags
4. Themotherbearisfed5fishforevery2fishthathercubisfed. Howmanyfishwouldthecubgetifthemotherisfed:
10fish? 4 fish20fish?8 fish
5. Thereare6boysforevery9girlsatthedisco. Howmanyboysarethereifthereare:
27girls?18 boys72girls?48 boys