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Reverse Percentage Worksheet

Percentage lesson 9: Find the whole from a percent · Set 445 · 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. 1.40% of a number is 90. What is the number?
  2. 2.5% of a number is 9. What is the number?
  3. 3.20% of a number is 19. What is the number?
  4. 4.Anaya spent ₹1, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  5. 5.126 is 60% of ?
  6. 6.75% of a number is 231. What is the number?
  7. 7.Sara spent ₹297, which is 75% of the pocket money. How much pocket money did Sara have, in rupees?
  8. 8.12 is 12% of ?
  9. 9.25% of a number is 22. What is the number?
  10. 10.24 is 50% of ?
  11. 11.5% of a number is 12. What is the number?
  12. 12.Ishaan spent ₹3, which is 5% of the pocket money. How much pocket money did Ishaan have, in rupees?
  13. 13.Dev spent ₹150, which is 50% of the pocket money. How much pocket money did Dev have, in rupees?
  14. 14.112 is 40% of ?
  15. 15.57 is 30% of ?
  16. 16.25% of a number is 96. What is the number?
  17. 17.20% of a number is 51. What is the number?
  18. 18.2 is 40% of ?
  19. 19.6 is 5% of ?
  20. 20.Dev spent ₹25, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  21. 21.Riya spent ₹3, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?
  22. 22.Riya spent ₹4, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  23. 23.Diya spent ₹76, which is 80% of the pocket money. How much pocket money did Diya have, in rupees?
  24. 24.Meera spent ₹6, which is 5% of the pocket money. How much pocket money did Meera have, in rupees?
  25. 25.Dev spent ₹19, which is 10% of the pocket money. How much pocket money did Dev have, in rupees?
  26. 26.50% of a number is 120. What is the number?
  27. 27.Meera spent ₹120, which is 30% of the pocket money. How much pocket money did Meera have, in rupees?
  28. 28.104 is 80% of ?
  29. 29.30% of a number is 57. What is the number?
  30. 30.Arjun spent ₹19, which is 5% of the pocket money. How much pocket money did Arjun have, in rupees?
  31. 31.Dev spent ₹117, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  32. 32.159 is 75% of ?
  33. 33.Diya spent ₹156, which is 80% of the pocket money. How much pocket money did Diya have, in rupees?
  34. 34.Rohan spent ₹90, which is 75% of the pocket money. How much pocket money did Rohan have, in rupees?
  35. 35.30 is 10% of ?
  36. 36.5% of a number is 17. What is the number?
  37. 37.75% of a number is 36. What is the number?
  38. 38.3 is 10% of ?
  39. 39.5% of a number is 4. What is the number?
  40. 40.75% of a number is 117. What is the number?

Answer key

  1. 225
  2. 180
  3. 95
  4. 5
  5. 210
  6. 308
  7. 396
  8. 100
  9. 88
  10. 48
  11. 240
  12. 60
  13. 300
  14. 280
  15. 190
  16. 384
  17. 255
  18. 5
  19. 120
  20. 100
  21. 20
  22. 20
  23. 95
  24. 120
  25. 190
  26. 240
  27. 400
  28. 130
  29. 190
  30. 380
  31. 195
  32. 212
  33. 195
  34. 120
  35. 300
  36. 340
  37. 48
  38. 30
  39. 80
  40. 156

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