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Percentage lesson 9: Find the whole from a percent · Set 337 · 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.Anaya spent ₹50, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  2. 2.12% of a number is 33. What is the number?
  3. 3.15% of a number is 9. What is the number?
  4. 4.25 is 50% of ?
  5. 5.104 is 40% of ?
  6. 6.30 is 75% of ?
  7. 7.93 is 25% of ?
  8. 8.12% of a number is 30. What is the number?
  9. 9.276 is 75% of ?
  10. 10.50% of a number is 186. What is the number?
  11. 11.Diya spent ₹148, which is 50% of the pocket money. How much pocket money did Diya have, in rupees?
  12. 12.24 is 30% of ?
  13. 13.50% of a number is 19. What is the number?
  14. 14.Anaya spent ₹79, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  15. 15.Aarav spent ₹225, which is 75% of the pocket money. How much pocket money did Aarav have, in rupees?
  16. 16.Rohan spent ₹8, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?
  17. 17.5% of a number is 2. What is the number?
  18. 18.10 is 10% of ?
  19. 19.20% of a number is 33. What is the number?
  20. 20.50% of a number is 73. What is the number?
  21. 21.9 is 30% of ?
  22. 22.50% of a number is 81. What is the number?
  23. 23.12 is 12% of ?
  24. 24.50% of a number is 187. What is the number?
  25. 25.Aarav spent ₹121, which is 50% of the pocket money. How much pocket money did Aarav have, in rupees?
  26. 26.Riya spent ₹2, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  27. 27.Isha spent ₹74, which is 50% of the pocket money. How much pocket money did Isha have, in rupees?
  28. 28.25% of a number is 80. What is the number?
  29. 29.12% of a number is 45. What is the number?
  30. 30.114 is 75% of ?
  31. 31.Sara spent ₹7, which is 25% of the pocket money. How much pocket money did Sara have, in rupees?
  32. 32.Aarav spent ₹19, which is 25% of the pocket money. How much pocket money did Aarav have, in rupees?
  33. 33.15% of a number is 45. What is the number?
  34. 34.10% of a number is 22. What is the number?
  35. 35.57 is 30% of ?
  36. 36.30% of a number is 99. What is the number?
  37. 37.12 is 10% of ?
  38. 38.31 is 20% of ?
  39. 39.20% of a number is 38. What is the number?
  40. 40.50% of a number is 42. What is the number?

Answer key

  1. 250
  2. 275
  3. 60
  4. 50
  5. 260
  6. 40
  7. 372
  8. 250
  9. 368
  10. 372
  11. 296
  12. 80
  13. 38
  14. 395
  15. 300
  16. 80
  17. 40
  18. 100
  19. 165
  20. 146
  21. 30
  22. 162
  23. 100
  24. 374
  25. 242
  26. 10
  27. 148
  28. 320
  29. 375
  30. 152
  31. 28
  32. 76
  33. 300
  34. 220
  35. 190
  36. 330
  37. 120
  38. 155
  39. 190
  40. 84

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