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Percentage lesson 9: Find the whole from a percent · Set 159 · 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. 1.50% of a number is 79. What is the number?
  2. 2.20% of a number is 72. What is the number?
  3. 3.39 is 30% of ?
  4. 4.12% of a number is 27. What is the number?
  5. 5.42 is 15% of ?
  6. 6.132 is 40% of ?
  7. 7.Diya spent ₹7, which is 20% of the pocket money. How much pocket money did Diya have, in rupees?
  8. 8.77 is 50% of ?
  9. 9.40 is 10% of ?
  10. 10.20 is 80% of ?
  11. 11.Kabir spent ₹61, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  12. 12.Meera spent ₹76, which is 80% of the pocket money. How much pocket money did Meera have, in rupees?
  13. 13.Dev spent ₹27, which is 30% of the pocket money. How much pocket money did Dev have, in rupees?
  14. 14.Ishaan spent ₹21, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  15. 15.15 is 5% of ?
  16. 16.15 is 10% of ?
  17. 17.12% of a number is 15. What is the number?
  18. 18.75% of a number is 201. What is the number?
  19. 19.30% of a number is 117. What is the number?
  20. 20.14 is 5% of ?
  21. 21.75% of a number is 42. What is the number?
  22. 22.25% of a number is 70. What is the number?
  23. 23.Rohan spent ₹159, which is 50% of the pocket money. How much pocket money did Rohan have, in rupees?
  24. 24.50% of a number is 168. What is the number?
  25. 25.20% of a number is 29. What is the number?
  26. 26.5% of a number is 11. What is the number?
  27. 27.10% of a number is 28. What is the number?
  28. 28.30% of a number is 105. What is the number?
  29. 29.5% of a number is 4. What is the number?
  30. 30.Isha spent ₹36, which is 12% of the pocket money. How much pocket money did Isha have, in rupees?
  31. 31.12 is 15% of ?
  32. 32.75% of a number is 72. What is the number?
  33. 33.99 is 25% of ?
  34. 34.13 is 25% of ?
  35. 35.Meera spent ₹6, which is 5% of the pocket money. How much pocket money did Meera have, in rupees?
  36. 36.Diya spent ₹99, which is 30% of the pocket money. How much pocket money did Diya have, in rupees?
  37. 37.Anaya spent ₹25, which is 50% of the pocket money. How much pocket money did Anaya have, in rupees?
  38. 38.34 is 40% of ?
  39. 39.Rohan spent ₹26, which is 40% of the pocket money. How much pocket money did Rohan have, in rupees?
  40. 40.75% of a number is 267. What is the number?

Answer key

  1. 158
  2. 360
  3. 130
  4. 225
  5. 280
  6. 330
  7. 35
  8. 154
  9. 400
  10. 25
  11. 305
  12. 95
  13. 90
  14. 175
  15. 300
  16. 150
  17. 125
  18. 268
  19. 390
  20. 280
  21. 56
  22. 280
  23. 318
  24. 336
  25. 145
  26. 220
  27. 280
  28. 350
  29. 80
  30. 300
  31. 80
  32. 96
  33. 396
  34. 52
  35. 120
  36. 330
  37. 50
  38. 85
  39. 65
  40. 356

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