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Percentage lesson 9: Find the whole from a percent · Set 381 · 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. 1.117 is 75% of ?
  2. 2.76 is 20% of ?
  3. 3.12 is 5% of ?
  4. 4.7 is 50% of ?
  5. 5.12 is 10% of ?
  6. 6.Rohan spent ₹85, which is 50% of the pocket money. How much pocket money did Rohan have, in rupees?
  7. 7.Kabir spent ₹6, which is 40% of the pocket money. How much pocket money did Kabir have, in rupees?
  8. 8.6 is 5% of ?
  9. 9.Arjun spent ₹5, which is 5% of the pocket money. How much pocket money did Arjun have, in rupees?
  10. 10.3 is 30% of ?
  11. 11.Ishaan spent ₹30, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  12. 12.25% of a number is 62. What is the number?
  13. 13.56 is 80% of ?
  14. 14.320 is 80% of ?
  15. 15.187 is 50% of ?
  16. 16.25% of a number is 74. What is the number?
  17. 17.Isha spent ₹145, which is 50% of the pocket money. How much pocket money did Isha have, in rupees?
  18. 18.35 is 25% of ?
  19. 19.77 is 20% of ?
  20. 20.3 is 5% of ?
  21. 21.140 is 50% of ?
  22. 22.Dev spent ₹36, which is 80% of the pocket money. How much pocket money did Dev have, in rupees?
  23. 23.Isha spent ₹140, which is 40% of the pocket money. How much pocket money did Isha have, in rupees?
  24. 24.124 is 80% of ?
  25. 25.Rohan spent ₹76, which is 40% of the pocket money. How much pocket money did Rohan have, in rupees?
  26. 26.27 is 50% of ?
  27. 27.60% of a number is 192. What is the number?
  28. 28.80% of a number is 68. What is the number?
  29. 29.Anaya spent ₹78, which is 30% of the pocket money. How much pocket money did Anaya have, in rupees?
  30. 30.19 is 25% of ?
  31. 31.Dev spent ₹11, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  32. 32.7 is 20% of ?
  33. 33.5% of a number is 1. What is the number?
  34. 34.135 is 50% of ?
  35. 35.15% of a number is 36. What is the number?
  36. 36.165 is 75% of ?
  37. 37.30% of a number is 24. What is the number?
  38. 38.126 is 60% of ?
  39. 39.60% of a number is 96. What is the number?
  40. 40.Rohan spent ₹38, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?

Answer key

  1. 156
  2. 380
  3. 240
  4. 14
  5. 120
  6. 170
  7. 15
  8. 120
  9. 100
  10. 10
  11. 250
  12. 248
  13. 70
  14. 400
  15. 374
  16. 296
  17. 290
  18. 140
  19. 385
  20. 60
  21. 280
  22. 45
  23. 350
  24. 155
  25. 190
  26. 54
  27. 320
  28. 85
  29. 260
  30. 76
  31. 44
  32. 35
  33. 20
  34. 270
  35. 240
  36. 220
  37. 80
  38. 210
  39. 160
  40. 380

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