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Percentage lesson 9: Find the whole from a percent · Set 330 · 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. 1.60% of a number is 9. What is the number?
  2. 2.13 is 25% of ?
  3. 3.50% of a number is 99. What is the number?
  4. 4.Arjun spent ₹52, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  5. 5.Diya spent ₹66, which is 20% of the pocket money. How much pocket money did Diya have, in rupees?
  6. 6.Isha spent ₹11, which is 5% of the pocket money. How much pocket money did Isha have, in rupees?
  7. 7.20% of a number is 30. What is the number?
  8. 8.6 is 15% of ?
  9. 9.Meera spent ₹96, which is 30% of the pocket money. How much pocket money did Meera have, in rupees?
  10. 10.19 is 10% of ?
  11. 11.50% of a number is 44. What is the number?
  12. 12.99 is 30% of ?
  13. 13.Kabir spent ₹15, which is 5% of the pocket money. How much pocket money did Kabir have, in rupees?
  14. 14.Arjun spent ₹69, which is 25% of the pocket money. How much pocket money did Arjun have, in rupees?
  15. 15.51 is 60% of ?
  16. 16.36 is 12% of ?
  17. 17.Kabir spent ₹178, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  18. 18.Aarav spent ₹48, which is 30% of the pocket money. How much pocket money did Aarav have, in rupees?
  19. 19.40% of a number is 10. What is the number?
  20. 20.5 is 10% of ?
  21. 21.Sara spent ₹236, which is 80% of the pocket money. How much pocket money did Sara have, in rupees?
  22. 22.25% of a number is 80. What is the number?
  23. 23.19 is 50% of ?
  24. 24.15% of a number is 48. What is the number?
  25. 25.Isha spent ₹3, which is 12% of the pocket money. How much pocket money did Isha have, in rupees?
  26. 26.15% of a number is 6. What is the number?
  27. 27.50% of a number is 64. What is the number?
  28. 28.24 is 80% of ?
  29. 29.120 is 80% of ?
  30. 30.196 is 80% of ?
  31. 31.50% of a number is 60. What is the number?
  32. 32.132 is 80% of ?
  33. 33.75% of a number is 69. What is the number?
  34. 34.Sara spent ₹108, which is 50% of the pocket money. How much pocket money did Sara have, in rupees?
  35. 35.63 is 30% of ?
  36. 36.30% of a number is 15. What is the number?
  37. 37.50% of a number is 178. What is the number?
  38. 38.47 is 20% of ?
  39. 39.91 is 25% of ?
  40. 40.19 is 5% of ?

Answer key

  1. 15
  2. 52
  3. 198
  4. 260
  5. 330
  6. 220
  7. 150
  8. 40
  9. 320
  10. 190
  11. 88
  12. 330
  13. 300
  14. 276
  15. 85
  16. 300
  17. 356
  18. 160
  19. 25
  20. 50
  21. 295
  22. 320
  23. 38
  24. 320
  25. 25
  26. 40
  27. 128
  28. 30
  29. 150
  30. 245
  31. 120
  32. 165
  33. 92
  34. 216
  35. 210
  36. 50
  37. 356
  38. 235
  39. 364
  40. 380

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