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Equivalent ratios: find any missing number

Year 7 maths · Fieldbook Learning

Name ______________________ Date __________

The blank can be in any place. Find the number that makes the two ratios equivalent.

  1. 4 : 1 = 12 : ___
  2. 4 : ___ = 8 : 4
  3. 3 : 3 = 9 : ___
  4. 1 : 3 = 4 : ___
  5. 2 : 1 = ___ : 4
  6. 4 : 2 = ___ : 6
  7. 5 : ___ = 10 : 10
  8. 1 : 6 = ___ : 36
  9. 5 : ___ = 25 : 35
  10. 5 : 2 = ___ : 6
  11. ___ : 6 = 16 : 12
  12. 4 : ___ = 36 : 72
  13. ___ : 120 = 3 : 12
  14. 18 : ___ = 6 : 11
  15. 66 : 60 = 11 : ___
  16. 12 : 11 = ___ : 77
  17. 45 : 99 = ___ : 11
  18. 15 : 8 = ___ : 64
  19. 13 : 12 = 143 : ___
  20. 84 : ___ = 12 : 10
More free practice: fieldbooklearning.com/uk/practice/year-7/equivalent-ratios-find-any-missing-number/

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Answer key: Equivalent ratios: find any missing number

  1. 3
  2. 2
  3. 9
  4. 12
  5. 8
  6. 12
  7. 5
  8. 6
  9. 7
  10. 15
  11. 8
  12. 8
  13. 30
  14. 33
  15. 10
  16. 84
  17. 5
  18. 120
  19. 132
  20. 70