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Percentage lesson 9: Find the whole from a percent · Set 54 · 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.Diya spent ₹15, which is 10% of the pocket money. How much pocket money did Diya have, in rupees?
  2. 2.5% of a number is 9. What is the number?
  3. 3.8 is 10% of ?
  4. 4.Dev spent ₹87, which is 75% of the pocket money. How much pocket money did Dev have, in rupees?
  5. 5.Rohan spent ₹30, which is 15% of the pocket money. How much pocket money did Rohan have, in rupees?
  6. 6.80% of a number is 4. What is the number?
  7. 7.123 is 60% of ?
  8. 8.50% of a number is 47. What is the number?
  9. 9.50% of a number is 90. What is the number?
  10. 10.8 is 5% of ?
  11. 11.60% of a number is 237. What is the number?
  12. 12.5% of a number is 19. What is the number?
  13. 13.144 is 40% of ?
  14. 14.15 is 5% of ?
  15. 15.6 is 10% of ?
  16. 16.10% of a number is 12. What is the number?
  17. 17.128 is 80% of ?
  18. 18.Aarav spent ₹33, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  19. 19.5 is 10% of ?
  20. 20.76 is 20% of ?
  21. 21.176 is 50% of ?
  22. 22.Arjun spent ₹121, which is 50% of the pocket money. How much pocket money did Arjun have, in rupees?
  23. 23.Dev spent ₹105, which is 30% of the pocket money. How much pocket money did Dev have, in rupees?
  24. 24.40% of a number is 72. What is the number?
  25. 25.11 is 20% of ?
  26. 26.Riya spent ₹50, which is 50% of the pocket money. How much pocket money did Riya have, in rupees?
  27. 27.Riya spent ₹39, which is 25% of the pocket money. How much pocket money did Riya have, in rupees?
  28. 28.25% of a number is 26. What is the number?
  29. 29.69 is 75% of ?
  30. 30.150 is 40% of ?
  31. 31.6 is 5% of ?
  32. 32.Aarav spent ₹296, which is 80% of the pocket money. How much pocket money did Aarav have, in rupees?
  33. 33.Kabir spent ₹60, which is 60% of the pocket money. How much pocket money did Kabir have, in rupees?
  34. 34.44 is 20% of ?
  35. 35.50% of a number is 41. What is the number?
  36. 36.Ishaan spent ₹139, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  37. 37.Arjun spent ₹96, which is 60% of the pocket money. How much pocket money did Arjun have, in rupees?
  38. 38.10 is 5% of ?
  39. 39.Isha spent ₹180, which is 50% of the pocket money. How much pocket money did Isha have, in rupees?
  40. 40.Diya spent ₹12, which is 80% of the pocket money. How much pocket money did Diya have, in rupees?

Answer key

  1. 150
  2. 180
  3. 80
  4. 116
  5. 200
  6. 5
  7. 205
  8. 94
  9. 180
  10. 160
  11. 395
  12. 380
  13. 360
  14. 300
  15. 60
  16. 120
  17. 160
  18. 165
  19. 50
  20. 380
  21. 352
  22. 242
  23. 350
  24. 180
  25. 55
  26. 100
  27. 156
  28. 104
  29. 92
  30. 375
  31. 120
  32. 370
  33. 100
  34. 220
  35. 82
  36. 278
  37. 160
  38. 200
  39. 360
  40. 15

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