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Percentage lesson 9: Find the whole from a percent · Set 228 · 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.Rohan spent ₹128, which is 40% of the pocket money. How much pocket money did Rohan have, in rupees?
  2. 2.Meera spent ₹21, which is 15% of the pocket money. How much pocket money did Meera have, in rupees?
  3. 3.50% of a number is 143. What is the number?
  4. 4.Dev spent ₹8, which is 40% of the pocket money. How much pocket money did Dev have, in rupees?
  5. 5.Arjun spent ₹6, which is 40% of the pocket money. How much pocket money did Arjun have, in rupees?
  6. 6.Arjun spent ₹44, which is 25% of the pocket money. How much pocket money did Arjun have, in rupees?
  7. 7.Dev spent ₹13, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  8. 8.210 is 60% of ?
  9. 9.268 is 80% of ?
  10. 10.15% of a number is 60. What is the number?
  11. 11.42 is 30% of ?
  12. 12.252 is 80% of ?
  13. 13.Kabir spent ₹19, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  14. 14.Rohan spent ₹60, which is 60% of the pocket money. How much pocket money did Rohan have, in rupees?
  15. 15.12% of a number is 18. What is the number?
  16. 16.12 is 5% of ?
  17. 17.50% of a number is 115. What is the number?
  18. 18.94 is 25% of ?
  19. 19.Sara spent ₹264, which is 75% of the pocket money. How much pocket money did Sara have, in rupees?
  20. 20.75% of a number is 216. What is the number?
  21. 21.10% of a number is 40. What is the number?
  22. 22.15% of a number is 33. What is the number?
  23. 23.Aarav spent ₹108, which is 30% of the pocket money. How much pocket money did Aarav have, in rupees?
  24. 24.10% of a number is 20. What is the number?
  25. 25.18 is 12% of ?
  26. 26.40% of a number is 78. What is the number?
  27. 27.10% of a number is 17. What is the number?
  28. 28.184 is 80% of ?
  29. 29.30% of a number is 111. What is the number?
  30. 30.18 is 30% of ?
  31. 31.16 is 80% of ?
  32. 32.25% of a number is 75. What is the number?
  33. 33.44 is 40% of ?
  34. 34.12% of a number is 9. What is the number?
  35. 35.80% of a number is 256. What is the number?
  36. 36.Dev spent ₹165, which is 50% of the pocket money. How much pocket money did Dev have, in rupees?
  37. 37.75% of a number is 6. What is the number?
  38. 38.9 is 10% of ?
  39. 39.5% of a number is 16. What is the number?
  40. 40.40% of a number is 124. What is the number?

Answer key

  1. 320
  2. 140
  3. 286
  4. 20
  5. 15
  6. 176
  7. 52
  8. 350
  9. 335
  10. 400
  11. 140
  12. 315
  13. 95
  14. 100
  15. 150
  16. 240
  17. 230
  18. 376
  19. 352
  20. 288
  21. 400
  22. 220
  23. 360
  24. 200
  25. 150
  26. 195
  27. 170
  28. 230
  29. 370
  30. 60
  31. 20
  32. 300
  33. 110
  34. 75
  35. 320
  36. 330
  37. 8
  38. 90
  39. 320
  40. 310

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