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Percentage lesson 9: Find the whole from a percent · Set 624 · 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.

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  1. 1.12% of a number is 33. What is the number?
  2. 2.Kabir spent ₹11, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  3. 3.Ishaan spent ₹30, which is 15% of the pocket money. How much pocket money did Ishaan have, in rupees?
  4. 4.Kabir spent ₹60, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  5. 5.Sara spent ₹45, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?
  6. 6.Aarav spent ₹30, which is 10% of the pocket money. How much pocket money did Aarav have, in rupees?
  7. 7.Riya spent ₹207, which is 60% of the pocket money. How much pocket money did Riya have, in rupees?
  8. 8.25% of a number is 34. What is the number?
  9. 9.15% of a number is 21. What is the number?
  10. 10.Ishaan spent ₹90, which is 75% of the pocket money. How much pocket money did Ishaan have, in rupees?
  11. 11.51 is 20% of ?
  12. 12.Riya spent ₹11, which is 5% of the pocket money. How much pocket money did Riya have, in rupees?
  13. 13.Riya spent ₹86, which is 40% of the pocket money. How much pocket money did Riya have, in rupees?
  14. 14.7 is 5% of ?
  15. 15.15% of a number is 48. What is the number?
  16. 16.Ishaan spent ₹141, which is 75% of the pocket money. How much pocket money did Ishaan have, in rupees?
  17. 17.Kabir spent ₹16, which is 25% of the pocket money. How much pocket money did Kabir have, in rupees?
  18. 18.12% of a number is 30. What is the number?
  19. 19.Kabir spent ₹10, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  20. 20.80% of a number is 28. What is the number?
  21. 21.3 is 5% of ?
  22. 22.92 is 80% of ?
  23. 23.Meera spent ₹3, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  24. 24.Riya spent ₹16, which is 10% of the pocket money. How much pocket money did Riya have, in rupees?
  25. 25.Meera spent ₹108, which is 30% of the pocket money. How much pocket money did Meera have, in rupees?
  26. 26.36 is 20% of ?
  27. 27.Meera spent ₹24, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  28. 28.25% of a number is 76. What is the number?
  29. 29.20% of a number is 38. What is the number?
  30. 30.Arjun spent ₹57, which is 15% of the pocket money. How much pocket money did Arjun have, in rupees?
  31. 31.27 is 12% of ?
  32. 32.30% of a number is 36. What is the number?
  33. 33.20% of a number is 72. What is the number?
  34. 34.104 is 50% of ?
  35. 35.Rohan spent ₹150, which is 60% of the pocket money. How much pocket money did Rohan have, in rupees?
  36. 36.27 is 15% of ?
  37. 37.Kabir spent ₹55, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  38. 38.80% of a number is 216. What is the number?
  39. 39.Isha spent ₹177, which is 60% of the pocket money. How much pocket money did Isha have, in rupees?
  40. 40.Meera spent ₹45, which is 75% of the pocket money. How much pocket money did Meera have, in rupees?

Answer key

  1. 275
  2. 22
  3. 200
  4. 300
  5. 150
  6. 300
  7. 345
  8. 136
  9. 140
  10. 120
  11. 255
  12. 220
  13. 215
  14. 140
  15. 320
  16. 188
  17. 64
  18. 250
  19. 100
  20. 35
  21. 60
  22. 115
  23. 25
  24. 160
  25. 360
  26. 180
  27. 120
  28. 304
  29. 190
  30. 380
  31. 225
  32. 120
  33. 360
  34. 208
  35. 250
  36. 180
  37. 275
  38. 270
  39. 295
  40. 60

Free percentage lessons, practice and worksheets at talentjr.in/how-to-calculate-percentage