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Math 6 · Unit 12: Ratio and proportion · Cambridge Primary Maths Stage 6

12.2 Direct proportion

15 questions · e.g. 5 pens cost $3.50. How much do 8 pens cost?

Practice

Questions

  1. 1. 5 pens cost $3.50. How much do 8 pens cost?

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  2. 2. 3 kg of apples cost $6. How much do 7 kg cost?

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  3. 3. A car travels 120 km in 2 hours. How far in 5 hours at the same speed?

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  4. 4. 4 builders take 6 days to build a wall. More builders would take fewer days. Is this direct proportion?

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  5. 5. A recipe for 6 uses 450 g pasta. How much for 4 people?

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  6. 6. $1 = 25 000 dong. How much is $8?

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  7. 7. 12 eggs cost $3. How much do 18 eggs cost?

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  8. 8. A printer prints 40 pages in 2 minutes. How long for 100 pages?

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  9. 9. 7 tickets cost $63. How much for 1 ticket?

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  10. 10. Which is direct proportion?

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  11. 11. 2 litres of paint covers 18 m². How much area does 5 litres cover?

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  12. 12. A tap fills 15 litres in 3 minutes. How long to fill 40 litres?

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  13. 13. A worker earns $96 for 8 hours. How much for 5 hours?

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  14. 14. 3 notebooks cost $4.20. How much for 10 notebooks?

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  15. 15. A plant grows 6 cm in 4 weeks at a steady rate. How much in 10 weeks?

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