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Percentage lesson 9: Find the whole from a percent · Set 481 · 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.Sara spent ₹2, which is 5% of the pocket money. How much pocket money did Sara have, in rupees?
  2. 2.25% of a number is 7. What is the number?
  3. 3.Kabir spent ₹24, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  4. 4.Anaya spent ₹15, which is 10% of the pocket money. How much pocket money did Anaya have, in rupees?
  5. 5.9 is 15% of ?
  6. 6.10% of a number is 18. What is the number?
  7. 7.Isha spent ₹85, which is 25% of the pocket money. How much pocket money did Isha have, in rupees?
  8. 8.25% of a number is 78. What is the number?
  9. 9.50% of a number is 200. What is the number?
  10. 10.75% of a number is 78. What is the number?
  11. 11.25% of a number is 65. What is the number?
  12. 12.22 is 10% of ?
  13. 13.20% of a number is 30. What is the number?
  14. 14.10% of a number is 2. What is the number?
  15. 15.12% of a number is 21. What is the number?
  16. 16.6 is 12% of ?
  17. 17.40% of a number is 26. What is the number?
  18. 18.30% of a number is 78. What is the number?
  19. 19.75% of a number is 165. What is the number?
  20. 20.Arjun spent ₹18, which is 15% of the pocket money. How much pocket money did Arjun have, in rupees?
  21. 21.36 is 15% of ?
  22. 22.80% of a number is 260. What is the number?
  23. 23.Meera spent ₹30, which is 15% of the pocket money. How much pocket money did Meera have, in rupees?
  24. 24.25% of a number is 31. What is the number?
  25. 25.50% of a number is 54. What is the number?
  26. 26.234 is 60% of ?
  27. 27.5% of a number is 10. What is the number?
  28. 28.56 is 20% of ?
  29. 29.25% of a number is 96. What is the number?
  30. 30.80% of a number is 148. What is the number?
  31. 31.80% of a number is 304. What is the number?
  32. 32.Anaya spent ₹39, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  33. 33.Anaya spent ₹176, which is 50% of the pocket money. How much pocket money did Anaya have, in rupees?
  34. 34.Rohan spent ₹20, which is 5% of the pocket money. How much pocket money did Rohan have, in rupees?
  35. 35.15% of a number is 18. What is the number?
  36. 36.180 is 60% of ?
  37. 37.15% of a number is 57. What is the number?
  38. 38.25% of a number is 56. What is the number?
  39. 39.12% of a number is 6. What is the number?
  40. 40.144 is 80% of ?

Answer key

  1. 40
  2. 28
  3. 120
  4. 150
  5. 60
  6. 180
  7. 340
  8. 312
  9. 400
  10. 104
  11. 260
  12. 220
  13. 150
  14. 20
  15. 175
  16. 50
  17. 65
  18. 260
  19. 220
  20. 120
  21. 240
  22. 325
  23. 200
  24. 124
  25. 108
  26. 390
  27. 200
  28. 280
  29. 384
  30. 185
  31. 380
  32. 195
  33. 352
  34. 400
  35. 120
  36. 300
  37. 380
  38. 224
  39. 50
  40. 180

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