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Percentage lesson 9: Find the whole from a percent · Set 369 · 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.Dev spent ₹99, which is 30% of the pocket money. How much pocket money did Dev have, in rupees?
  2. 2.10 is 10% of ?
  3. 3.Rohan spent ₹9, which is 15% of the pocket money. How much pocket money did Rohan have, in rupees?
  4. 4.280 is 80% of ?
  5. 5.20% of a number is 54. What is the number?
  6. 6.Ishaan spent ₹35, which is 20% of the pocket money. How much pocket money did Ishaan have, in rupees?
  7. 7.Meera spent ₹30, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  8. 8.40% of a number is 4. What is the number?
  9. 9.5% of a number is 10. What is the number?
  10. 10.152 is 40% of ?
  11. 11.Rohan spent ₹66, which is 60% of the pocket money. How much pocket money did Rohan have, in rupees?
  12. 12.50% of a number is 169. What is the number?
  13. 13.20% of a number is 45. What is the number?
  14. 14.90 is 60% of ?
  15. 15.30% of a number is 30. What is the number?
  16. 16.30% of a number is 105. What is the number?
  17. 17.75% of a number is 189. What is the number?
  18. 18.Rohan spent ₹81, which is 30% of the pocket money. How much pocket money did Rohan have, in rupees?
  19. 19.Riya spent ₹43, which is 25% of the pocket money. How much pocket money did Riya have, in rupees?
  20. 20.40 is 10% of ?
  21. 21.10% of a number is 10. What is the number?
  22. 22.75% of a number is 66. What is the number?
  23. 23.80% of a number is 312. What is the number?
  24. 24.15% of a number is 15. What is the number?
  25. 25.Rohan spent ₹18, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?
  26. 26.Ishaan spent ₹13, which is 5% of the pocket money. How much pocket money did Ishaan have, in rupees?
  27. 27.Anaya spent ₹58, which is 40% of the pocket money. How much pocket money did Anaya have, in rupees?
  28. 28.Aarav spent ₹60, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  29. 29.Ishaan spent ₹9, which is 5% of the pocket money. How much pocket money did Ishaan have, in rupees?
  30. 30.40% of a number is 126. What is the number?
  31. 31.25% of a number is 64. What is the number?
  32. 32.10 is 50% of ?
  33. 33.75% of a number is 111. What is the number?
  34. 34.Sara spent ₹71, which is 20% of the pocket money. How much pocket money did Sara have, in rupees?
  35. 35.Isha spent ₹87, which is 75% of the pocket money. How much pocket money did Isha have, in rupees?
  36. 36.24 is 12% of ?
  37. 37.80% of a number is 236. What is the number?
  38. 38.Meera spent ₹25, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  39. 39.Sara spent ₹288, which is 80% of the pocket money. How much pocket money did Sara have, in rupees?
  40. 40.Aarav spent ₹261, which is 75% of the pocket money. How much pocket money did Aarav have, in rupees?

Answer key

  1. 330
  2. 100
  3. 60
  4. 350
  5. 270
  6. 175
  7. 300
  8. 10
  9. 200
  10. 380
  11. 110
  12. 338
  13. 225
  14. 150
  15. 100
  16. 350
  17. 252
  18. 270
  19. 172
  20. 400
  21. 100
  22. 88
  23. 390
  24. 100
  25. 180
  26. 260
  27. 145
  28. 300
  29. 180
  30. 315
  31. 256
  32. 20
  33. 148
  34. 355
  35. 116
  36. 200
  37. 295
  38. 125
  39. 360
  40. 348

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