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Percentage lesson 9: Find the whole from a percent · Set 67 · 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. 1.50% of a number is 60. What is the number?
  2. 2.9 is 12% of ?
  3. 3.75% of a number is 258. What is the number?
  4. 4.Rohan spent ₹24, which is 80% of the pocket money. How much pocket money did Rohan have, in rupees?
  5. 5.5% of a number is 20. What is the number?
  6. 6.12% of a number is 27. What is the number?
  7. 7.3 is 10% of ?
  8. 8.83 is 25% of ?
  9. 9.Isha spent ₹15, which is 10% of the pocket money. How much pocket money did Isha have, in rupees?
  10. 10.Dev spent ₹300, which is 80% of the pocket money. How much pocket money did Dev have, in rupees?
  11. 11.Ishaan spent ₹107, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  12. 12.Kabir spent ₹11, which is 5% of the pocket money. How much pocket money did Kabir have, in rupees?
  13. 13.10% of a number is 34. What is the number?
  14. 14.21 is 25% of ?
  15. 15.5% of a number is 19. What is the number?
  16. 16.Dev spent ₹25, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  17. 17.12% of a number is 6. What is the number?
  18. 18.80% of a number is 104. What is the number?
  19. 19.Ishaan spent ₹28, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  20. 20.80% of a number is 316. What is the number?
  21. 21.40% of a number is 152. What is the number?
  22. 22.Aarav spent ₹31, which is 25% of the pocket money. How much pocket money did Aarav have, in rupees?
  23. 23.30% of a number is 18. What is the number?
  24. 24.Anaya spent ₹1, which is 10% of the pocket money. How much pocket money did Anaya have, in rupees?
  25. 25.Meera spent ₹36, which is 30% of the pocket money. How much pocket money did Meera have, in rupees?
  26. 26.78 is 20% of ?
  27. 27.126 is 50% of ?
  28. 28.Arjun spent ₹6, which is 15% of the pocket money. How much pocket money did Arjun have, in rupees?
  29. 29.36 is 15% of ?
  30. 30.Diya spent ₹141, which is 60% of the pocket money. How much pocket money did Diya have, in rupees?
  31. 31.12 is 30% of ?
  32. 32.60% of a number is 174. What is the number?
  33. 33.Sara spent ₹42, which is 50% of the pocket money. How much pocket money did Sara have, in rupees?
  34. 34.Anaya spent ₹14, which is 10% of the pocket money. How much pocket money did Anaya have, in rupees?
  35. 35.Kabir spent ₹10, which is 25% of the pocket money. How much pocket money did Kabir have, in rupees?
  36. 36.Riya spent ₹90, which is 25% of the pocket money. How much pocket money did Riya have, in rupees?
  37. 37.6 is 5% of ?
  38. 38.25% of a number is 52. What is the number?
  39. 39.Sara spent ₹4, which is 5% of the pocket money. How much pocket money did Sara have, in rupees?
  40. 40.10% of a number is 1. What is the number?

Answer key

  1. 120
  2. 75
  3. 344
  4. 30
  5. 400
  6. 225
  7. 30
  8. 332
  9. 150
  10. 375
  11. 214
  12. 220
  13. 340
  14. 84
  15. 380
  16. 125
  17. 50
  18. 130
  19. 56
  20. 395
  21. 380
  22. 124
  23. 60
  24. 10
  25. 120
  26. 390
  27. 252
  28. 40
  29. 240
  30. 235
  31. 40
  32. 290
  33. 84
  34. 140
  35. 40
  36. 360
  37. 120
  38. 208
  39. 80
  40. 10

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