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Percentage lesson 9: Find the whole from a percent · Set 663 · 40 questions
TalentJR

How to work it out (Back to 100%): Write what you know: p% is a. The whole (100%) = a × 100 ÷ p. Check: p% of your answer must give a back.

NameDateTime takenScore ___ / 40
  1. 1.80% of a number is 60. What is the number?
  2. 2.Sara spent ₹57, which is 75% of the pocket money. How much pocket money did Sara have, in rupees?
  3. 3.42 is 12% of ?
  4. 4.75% of a number is 54. What is the number?
  5. 5.20% of a number is 36. What is the number?
  6. 6.15% of a number is 45. What is the number?
  7. 7.102 is 50% of ?
  8. 8.109 is 50% of ?
  9. 9.Dev spent ₹105, which is 50% of the pocket money. How much pocket money did Dev have, in rupees?
  10. 10.Dev spent ₹6, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  11. 11.30 is 30% of ?
  12. 12.79 is 25% of ?
  13. 13.12 is 30% of ?
  14. 14.51 is 25% of ?
  15. 15.Arjun spent ₹13, which is 10% of the pocket money. How much pocket money did Arjun have, in rupees?
  16. 16.12% of a number is 42. What is the number?
  17. 17.Ishaan spent ₹105, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  18. 18.Dev spent ₹198, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  19. 19.27 is 60% of ?
  20. 20.45 is 12% of ?
  21. 21.5% of a number is 1. What is the number?
  22. 22.72 is 25% of ?
  23. 23.Meera spent ₹30, which is 15% of the pocket money. How much pocket money did Meera have, in rupees?
  24. 24.256 is 80% of ?
  25. 25.21 is 15% of ?
  26. 26.57 is 75% of ?
  27. 27.75% of a number is 102. What is the number?
  28. 28.Meera spent ₹57, which is 25% of the pocket money. How much pocket money did Meera have, in rupees?
  29. 29.3 is 15% of ?
  30. 30.67 is 25% of ?
  31. 31.87 is 30% of ?
  32. 32.25% of a number is 81. What is the number?
  33. 33.5% of a number is 19. What is the number?
  34. 34.75% of a number is 81. What is the number?
  35. 35.12% of a number is 30. What is the number?
  36. 36.Arjun spent ₹60, which is 30% of the pocket money. How much pocket money did Arjun have, in rupees?
  37. 37.6 is 12% of ?
  38. 38.Sara spent ₹4, which is 5% of the pocket money. How much pocket money did Sara have, in rupees?
  39. 39.40% of a number is 140. What is the number?
  40. 40.28 is 20% of ?

Answer key

  1. 75
  2. 76
  3. 350
  4. 72
  5. 180
  6. 300
  7. 204
  8. 218
  9. 210
  10. 10
  11. 100
  12. 316
  13. 40
  14. 204
  15. 130
  16. 350
  17. 350
  18. 330
  19. 45
  20. 375
  21. 20
  22. 288
  23. 200
  24. 320
  25. 140
  26. 76
  27. 136
  28. 228
  29. 20
  30. 268
  31. 290
  32. 324
  33. 380
  34. 108
  35. 250
  36. 200
  37. 50
  38. 80
  39. 350
  40. 140

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