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Percentage lesson 9: Find the whole from a percent · Set 473 · 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.Rohan spent ₹30, which is 15% of the pocket money. How much pocket money did Rohan have, in rupees?
  2. 2.75% of a number is 216. What is the number?
  3. 3.12% of a number is 48. What is the number?
  4. 4.Arjun spent ₹231, which is 75% of the pocket money. How much pocket money did Arjun have, in rupees?
  5. 5.6 is 10% of ?
  6. 6.60% of a number is 18. What is the number?
  7. 7.308 is 80% of ?
  8. 8.15 is 15% of ?
  9. 9.153 is 75% of ?
  10. 10.140 is 50% of ?
  11. 11.Ishaan spent ₹45, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  12. 12.27 is 30% of ?
  13. 13.45 is 15% of ?
  14. 14.60% of a number is 129. What is the number?
  15. 15.10% of a number is 38. What is the number?
  16. 16.10% of a number is 12. What is the number?
  17. 17.37 is 10% of ?
  18. 18.15% of a number is 15. What is the number?
  19. 19.Dev spent ₹55, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  20. 20.Riya spent ₹12, which is 5% of the pocket money. How much pocket money did Riya have, in rupees?
  21. 21.52 is 20% of ?
  22. 22.20% of a number is 58. What is the number?
  23. 23.40% of a number is 154. What is the number?
  24. 24.40% of a number is 66. What is the number?
  25. 25.80% of a number is 316. What is the number?
  26. 26.20% of a number is 22. What is the number?
  27. 27.Rohan spent ₹45, which is 12% of the pocket money. How much pocket money did Rohan have, in rupees?
  28. 28.20% of a number is 11. What is the number?
  29. 29.3 is 75% of ?
  30. 30.Isha spent ₹36, which is 30% of the pocket money. How much pocket money did Isha have, in rupees?
  31. 31.27 is 50% of ?
  32. 32.20% of a number is 35. What is the number?
  33. 33.19 is 5% of ?
  34. 34.Meera spent ₹249, which is 75% of the pocket money. How much pocket money did Meera have, in rupees?
  35. 35.5% of a number is 4. What is the number?
  36. 36.15% of a number is 57. What is the number?
  37. 37.Meera spent ₹189, which is 50% of the pocket money. How much pocket money did Meera have, in rupees?
  38. 38.40% of a number is 118. What is the number?
  39. 39.132 is 40% of ?
  40. 40.30% of a number is 93. What is the number?

Answer key

  1. 200
  2. 288
  3. 400
  4. 308
  5. 60
  6. 30
  7. 385
  8. 100
  9. 204
  10. 280
  11. 150
  12. 90
  13. 300
  14. 215
  15. 380
  16. 120
  17. 370
  18. 100
  19. 275
  20. 240
  21. 260
  22. 290
  23. 385
  24. 165
  25. 395
  26. 110
  27. 375
  28. 55
  29. 4
  30. 120
  31. 54
  32. 175
  33. 380
  34. 332
  35. 80
  36. 380
  37. 378
  38. 295
  39. 330
  40. 310

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