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Reverse Percentage Worksheet

Percentage lesson 9: Find the whole from a percent · Set 161 · 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. 1.75% of a number is 3. What is the number?
  2. 2.10% of a number is 7. What is the number?
  3. 3.80% of a number is 64. What is the number?
  4. 4.Meera spent ₹28, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  5. 5.Ishaan spent ₹119, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  6. 6.7 is 5% of ?
  7. 7.4 is 10% of ?
  8. 8.60% of a number is 45. What is the number?
  9. 9.10 is 25% of ?
  10. 10.28 is 40% of ?
  11. 11.6 is 12% of ?
  12. 12.Riya spent ₹27, which is 10% of the pocket money. How much pocket money did Riya have, in rupees?
  13. 13.15% of a number is 57. What is the number?
  14. 14.30% of a number is 72. What is the number?
  15. 15.5% of a number is 20. What is the number?
  16. 16.Sara spent ₹32, which is 10% of the pocket money. How much pocket money did Sara have, in rupees?
  17. 17.Dev spent ₹270, which is 75% of the pocket money. How much pocket money did Dev have, in rupees?
  18. 18.Diya spent ₹3, which is 5% of the pocket money. How much pocket money did Diya have, in rupees?
  19. 19.Ishaan spent ₹69, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  20. 20.106 is 40% of ?
  21. 21.45 is 12% of ?
  22. 22.Riya spent ₹3, which is 12% of the pocket money. How much pocket money did Riya have, in rupees?
  23. 23.12% of a number is 24. What is the number?
  24. 24.42 is 40% of ?
  25. 25.Isha spent ₹108, which is 40% of the pocket money. How much pocket money did Isha have, in rupees?
  26. 26.Kabir spent ₹48, which is 12% of the pocket money. How much pocket money did Kabir have, in rupees?
  27. 27.Arjun spent ₹77, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  28. 28.80% of a number is 308. What is the number?
  29. 29.16 is 20% of ?
  30. 30.17 is 20% of ?
  31. 31.Anaya spent ₹33, which is 15% of the pocket money. How much pocket money did Anaya have, in rupees?
  32. 32.30% of a number is 111. What is the number?
  33. 33.20% of a number is 54. What is the number?
  34. 34.284 is 80% of ?
  35. 35.Dev spent ₹57, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  36. 36.20% of a number is 9. What is the number?
  37. 37.Arjun spent ₹17, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  38. 38.Aarav spent ₹19, which is 50% of the pocket money. How much pocket money did Aarav have, in rupees?
  39. 39.57 is 30% of ?
  40. 40.12% of a number is 3. What is the number?

Answer key

  1. 4
  2. 70
  3. 80
  4. 280
  5. 238
  6. 140
  7. 40
  8. 75
  9. 40
  10. 70
  11. 50
  12. 270
  13. 380
  14. 240
  15. 400
  16. 320
  17. 360
  18. 60
  19. 138
  20. 265
  21. 375
  22. 25
  23. 200
  24. 105
  25. 270
  26. 400
  27. 385
  28. 385
  29. 80
  30. 85
  31. 220
  32. 370
  33. 270
  34. 355
  35. 228
  36. 45
  37. 85
  38. 38
  39. 190
  40. 25

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