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Equivalent ratios: find the missing number

Year 6 maths · Fieldbook Learning

Name ______________________ Date __________

Both ratios must describe the same relationship. Find the number that goes in the blank.

  1. 2 : 3 = 10 : ___
  2. 2 : 3 = 4 : ___
  3. 1 : 1 = 3 : ___
  4. 2 : 4 = 6 : ___
  5. 6 : 3 = 18 : ___
  6. 4 : 1 = 20 : ___
  7. 1 : 1 = 2 : ___
  8. 2 : 2 = 4 : ___
  9. 6 : 7 = 30 : ___
  10. 7 : 8 = 49 : ___
  11. 9 : 2 = 27 : ___
  12. 21 : 15 = 7 : ___
  13. 6 : 6 = 66 : ___
  14. 42 : 42 = 6 : ___
  15. 36 : 44 = 9 : ___
  16. 64 : 48 = 8 : ___
  17. 12 : 6 = 84 : ___
  18. 6 : 11 = 48 : ___
  19. 120 : 130 = 12 : ___
  20. 88 : 132 = 8 : ___
More free practice: fieldbooklearning.com/au/practice/year-6/equivalent-ratios-find-the-last-number/

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20 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

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Answer key: Equivalent ratios: find the missing number

  1. 15
  2. 6
  3. 3
  4. 12
  5. 9
  6. 5
  7. 2
  8. 4
  9. 35
  10. 56
  11. 6
  12. 5
  13. 66
  14. 6
  15. 11
  16. 6
  17. 42
  18. 88
  19. 13
  20. 12