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Percentage lesson 9: Find the whole from a percent · Set 257 · 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. 1.117 is 60% of ?
  2. 2.50% of a number is 172. What is the number?
  3. 3.Dev spent ₹52, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  4. 4.40% of a number is 62. What is the number?
  5. 5.Kabir spent ₹204, which is 75% of the pocket money. How much pocket money did Kabir have, in rupees?
  6. 6.Kabir spent ₹165, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  7. 7.75 is 20% of ?
  8. 8.Sara spent ₹120, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?
  9. 9.36 is 50% of ?
  10. 10.15 is 10% of ?
  11. 11.20% of a number is 11. What is the number?
  12. 12.13 is 5% of ?
  13. 13.80% of a number is 112. What is the number?
  14. 14.50% of a number is 42. What is the number?
  15. 15.30% of a number is 36. What is the number?
  16. 16.89 is 50% of ?
  17. 17.Sara spent ₹35, which is 20% of the pocket money. How much pocket money did Sara have, in rupees?
  18. 18.102 is 30% of ?
  19. 19.60% of a number is 60. What is the number?
  20. 20.32 is 80% of ?
  21. 21.40% of a number is 126. What is the number?
  22. 22.6 is 15% of ?
  23. 23.Dev spent ₹260, which is 80% of the pocket money. How much pocket money did Dev have, in rupees?
  24. 24.Diya spent ₹174, which is 50% of the pocket money. How much pocket money did Diya have, in rupees?
  25. 25.35 is 10% of ?
  26. 26.Rohan spent ₹28, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?
  27. 27.16 is 40% of ?
  28. 28.19 is 10% of ?
  29. 29.Meera spent ₹47, which is 25% of the pocket money. How much pocket money did Meera have, in rupees?
  30. 30.171 is 60% of ?
  31. 31.117 is 50% of ?
  32. 32.10% of a number is 4. What is the number?
  33. 33.108 is 50% of ?
  34. 34.12% of a number is 12. What is the number?
  35. 35.15 is 15% of ?
  36. 36.Aarav spent ₹3, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  37. 37.80% of a number is 192. What is the number?
  38. 38.17 is 10% of ?
  39. 39.8 is 10% of ?
  40. 40.Riya spent ₹6, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?

Answer key

  1. 195
  2. 344
  3. 260
  4. 155
  5. 272
  6. 330
  7. 375
  8. 400
  9. 72
  10. 150
  11. 55
  12. 260
  13. 140
  14. 84
  15. 120
  16. 178
  17. 175
  18. 340
  19. 100
  20. 40
  21. 315
  22. 40
  23. 325
  24. 348
  25. 350
  26. 280
  27. 40
  28. 190
  29. 188
  30. 285
  31. 234
  32. 40
  33. 216
  34. 100
  35. 100
  36. 15
  37. 240
  38. 170
  39. 80
  40. 40

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