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Percentage lesson 9: Find the whole from a percent · Set 810 · 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. 1.5% of a number is 15. What is the number?
  2. 2.Kabir spent ₹138, which is 60% of the pocket money. How much pocket money did Kabir have, in rupees?
  3. 3.60% of a number is 120. What is the number?
  4. 4.25% of a number is 28. What is the number?
  5. 5.30% of a number is 9. What is the number?
  6. 6.Riya spent ₹18, which is 5% of the pocket money. How much pocket money did Riya have, in rupees?
  7. 7.159 is 50% of ?
  8. 8.Aarav spent ₹12, which is 25% of the pocket money. How much pocket money did Aarav have, in rupees?
  9. 9.75% of a number is 3. What is the number?
  10. 10.Aarav spent ₹39, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  11. 11.Diya spent ₹14, which is 20% of the pocket money. How much pocket money did Diya have, in rupees?
  12. 12.Dev spent ₹23, which is 50% of the pocket money. How much pocket money did Dev have, in rupees?
  13. 13.Meera spent ₹93, which is 60% of the pocket money. How much pocket money did Meera have, in rupees?
  14. 14.6 is 75% of ?
  15. 15.38 is 10% of ?
  16. 16.20% of a number is 50. What is the number?
  17. 17.5% of a number is 3. What is the number?
  18. 18.30% of a number is 33. What is the number?
  19. 19.36 is 60% of ?
  20. 20.24 is 20% of ?
  21. 21.Meera spent ₹288, which is 80% of the pocket money. How much pocket money did Meera have, in rupees?
  22. 22.54 is 15% of ?
  23. 23.Arjun spent ₹73, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  24. 24.80% of a number is 184. What is the number?
  25. 25.80% of a number is 8. What is the number?
  26. 26.Kabir spent ₹60, which is 15% of the pocket money. How much pocket money did Kabir have, in rupees?
  27. 27.Meera spent ₹60, which is 15% of the pocket money. How much pocket money did Meera have, in rupees?
  28. 28.Ishaan spent ₹96, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  29. 29.Kabir spent ₹5, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  30. 30.Meera spent ₹285, which is 75% of the pocket money. How much pocket money did Meera have, in rupees?
  31. 31.80% of a number is 72. What is the number?
  32. 32.31 is 20% of ?
  33. 33.5% of a number is 12. What is the number?
  34. 34.Rohan spent ₹6, which is 30% of the pocket money. How much pocket money did Rohan have, in rupees?
  35. 35.79 is 20% of ?
  36. 36.3 is 20% of ?
  37. 37.9 is 5% of ?
  38. 38.5% of a number is 11. What is the number?
  39. 39.Anaya spent ₹3, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  40. 40.Rohan spent ₹4, which is 25% of the pocket money. How much pocket money did Rohan have, in rupees?

Answer key

  1. 300
  2. 230
  3. 200
  4. 112
  5. 30
  6. 360
  7. 318
  8. 48
  9. 4
  10. 195
  11. 70
  12. 46
  13. 155
  14. 8
  15. 380
  16. 250
  17. 60
  18. 110
  19. 60
  20. 120
  21. 360
  22. 360
  23. 365
  24. 230
  25. 10
  26. 400
  27. 400
  28. 320
  29. 50
  30. 380
  31. 90
  32. 155
  33. 240
  34. 20
  35. 395
  36. 15
  37. 180
  38. 220
  39. 15
  40. 16

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