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

Questions

1. 1. Simplify 6 : 9.

   • 6 : 9 can't be simplified
   • 1 : 3
   • 2 : 3
   • 3 : 2
   Check

2. 2. Share $40 in the ratio 3 : 5. What is the larger share?

   • $20
   • $25
   • $24
   • $15
   Check

3. 3. Simplify 12 : 4.

   • 3 : 1
   • 8 : 1
   • 1 : 3
   • 4 : 1
   Check

4. 4. There are 10 boys and 15 girls. What is the ratio of boys to girls in simplest form?

   • 10 : 25
   • 1 : 5
   • 2 : 3
   • 3 : 2
   Check

5. 5. Share 21 sweets in the ratio 1 : 2. How many in the smaller share?

   • 14
   • 7
   • 10
   • 3
   Check

6. 6. Red : blue = 2 : 5. There are 8 red. How many blue?

   • 13
   • 11
   • 5
   • 20
   Check

7. 7. Concrete is sand : cement = 3 : 1. How much sand with 4 kg cement?

   • 4 kg
   • 7 kg
   • 12 kg
   • 3 kg
   Check

8. 8. Share 60 in the ratio 1 : 2 : 3. What is the largest share?

   • 20
   • 30
   • 10
   • 36
   Check

9. 9. Simplify 20 : 30 : 50.

   • 1 : 2 : 3
   • 20 : 30 : 50
   • 4 : 6 : 10
   • 2 : 3 : 5
   Check

10. 10. In 2 : 3, what fraction of the total is the first part?

    • ½
    • ⅗
    • ⅖
    • ⅔
    Check

11. 11. A recipe uses flour : sugar = 5 : 2. 300 g flour needs how much sugar?

    • 120 g
    • 750 g
    • 60 g
    • 150 g
    Check

12. 12. Is 4 : 6 the same as 6 : 9?

    • Yes
    • No
    Check

13. 13. Share $90 between Ali and Bo in the ratio 4 : 5. How much does Ali get?

    • $50
    • $45
    • $36
    • $40
    Check

14. 14. A map scale is 1 : 1000. 5 cm on the map is how far in real life?

    • 50 m
    • 5 km
    • 5 m
    • 500 m
    Check

15. 15. Cats : dogs = 3 : 4. There are 28 animals. How many cats?

    • 9
    • 21
    • 16
    • 12
    Check