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Percentage lesson 9: Find the whole from a percent · Set 385 · 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.Aarav spent ₹12, which is 60% of the pocket money. How much pocket money did Aarav have, in rupees?
  2. 2.Dev spent ₹45, which is 12% of the pocket money. How much pocket money did Dev have, in rupees?
  3. 3.6 is 30% of ?
  4. 4.Aarav spent ₹17, which is 10% of the pocket money. How much pocket money did Aarav have, in rupees?
  5. 5.Meera spent ₹21, which is 15% of the pocket money. How much pocket money did Meera have, in rupees?
  6. 6.24 is 15% of ?
  7. 7.50% of a number is 160. What is the number?
  8. 8.42 is 12% of ?
  9. 9.20% of a number is 3. What is the number?
  10. 10.96 is 25% of ?
  11. 11.48 is 40% of ?
  12. 12.20% of a number is 27. What is the number?
  13. 13.60% of a number is 117. What is the number?
  14. 14.5 is 25% of ?
  15. 15.Rohan spent ₹18, which is 15% of the pocket money. How much pocket money did Rohan have, in rupees?
  16. 16.18 is 50% of ?
  17. 17.30% of a number is 9. What is the number?
  18. 18.Meera spent ₹36, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  19. 19.6 is 15% of ?
  20. 20.Diya spent ₹19, which is 50% of the pocket money. How much pocket money did Diya have, in rupees?
  21. 21.50% of a number is 195. What is the number?
  22. 22.40% of a number is 50. What is the number?
  23. 23.Ishaan spent ₹261, which is 75% of the pocket money. How much pocket money did Ishaan have, in rupees?
  24. 24.60 is 15% of ?
  25. 25.Kabir spent ₹138, which is 75% of the pocket money. How much pocket money did Kabir have, in rupees?
  26. 26.18 is 10% of ?
  27. 27.212 is 80% of ?
  28. 28.Diya spent ₹144, which is 75% of the pocket money. How much pocket money did Diya have, in rupees?
  29. 29.54 is 15% of ?
  30. 30.30 is 15% of ?
  31. 31.40% of a number is 4. What is the number?
  32. 32.Meera spent ₹7, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  33. 33.Ishaan spent ₹100, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  34. 34.80% of a number is 20. What is the number?
  35. 35.120 is 75% of ?
  36. 36.33 is 15% of ?
  37. 37.Meera spent ₹54, which is 60% of the pocket money. How much pocket money did Meera have, in rupees?
  38. 38.32 is 40% of ?
  39. 39.Isha spent ₹13, which is 5% of the pocket money. How much pocket money did Isha have, in rupees?
  40. 40.50% of a number is 31. What is the number?

Answer key

  1. 20
  2. 375
  3. 20
  4. 170
  5. 140
  6. 160
  7. 320
  8. 350
  9. 15
  10. 384
  11. 120
  12. 135
  13. 195
  14. 20
  15. 120
  16. 36
  17. 30
  18. 180
  19. 40
  20. 38
  21. 390
  22. 125
  23. 348
  24. 400
  25. 184
  26. 180
  27. 265
  28. 192
  29. 360
  30. 200
  31. 10
  32. 70
  33. 200
  34. 25
  35. 160
  36. 220
  37. 90
  38. 80
  39. 260
  40. 62

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