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Percentage lesson 9: Find the whole from a percent · Set 542 · 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 ₹18, which is 5% of the pocket money. How much pocket money did Rohan have, in rupees?
  2. 2.Dev spent ₹15, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  3. 3.20 is 50% of ?
  4. 4.Aarav spent ₹3, which is 5% of the pocket money. How much pocket money did Aarav have, in rupees?
  5. 5.40% of a number is 74. What is the number?
  6. 6.75% of a number is 153. What is the number?
  7. 7.50% of a number is 151. What is the number?
  8. 8.20% of a number is 28. What is the number?
  9. 9.Meera spent ₹5, which is 5% of the pocket money. How much pocket money did Meera have, in rupees?
  10. 10.15% of a number is 42. What is the number?
  11. 11.50% of a number is 32. What is the number?
  12. 12.29 is 20% of ?
  13. 13.30% of a number is 36. What is the number?
  14. 14.Ishaan spent ₹45, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  15. 15.3 is 5% of ?
  16. 16.50% of a number is 108. What is the number?
  17. 17.Diya spent ₹111, which is 30% of the pocket money. How much pocket money did Diya have, in rupees?
  18. 18.40 is 10% of ?
  19. 19.Meera spent ₹54, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  20. 20.Arjun spent ₹48, which is 15% of the pocket money. How much pocket money did Arjun have, in rupees?
  21. 21.16 is 5% of ?
  22. 22.51 is 15% of ?
  23. 23.126 is 60% of ?
  24. 24.156 is 40% of ?
  25. 25.27 is 60% of ?
  26. 26.Kabir spent ₹152, which is 80% of the pocket money. How much pocket money did Kabir have, in rupees?
  27. 27.Meera spent ₹20, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  28. 28.20% of a number is 21. What is the number?
  29. 29.212 is 80% of ?
  30. 30.96 is 80% of ?
  31. 31.15% of a number is 9. What is the number?
  32. 32.78 is 40% of ?
  33. 33.288 is 75% of ?
  34. 34.30% of a number is 30. What is the number?
  35. 35.165 is 50% of ?
  36. 36.66 is 30% of ?
  37. 37.38 is 20% of ?
  38. 38.60% of a number is 111. What is the number?
  39. 39.60% of a number is 207. What is the number?
  40. 40.80% of a number is 132. What is the number?

Answer key

  1. 360
  2. 60
  3. 40
  4. 60
  5. 185
  6. 204
  7. 302
  8. 140
  9. 100
  10. 280
  11. 64
  12. 145
  13. 120
  14. 375
  15. 60
  16. 216
  17. 370
  18. 400
  19. 270
  20. 320
  21. 320
  22. 340
  23. 210
  24. 390
  25. 45
  26. 190
  27. 200
  28. 105
  29. 265
  30. 120
  31. 60
  32. 195
  33. 384
  34. 100
  35. 330
  36. 220
  37. 190
  38. 185
  39. 345
  40. 165

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