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Percentage lesson 9: Find the whole from a percent · Set 315 · 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 ₹12, which is 5% of the pocket money. How much pocket money did Sara have, in rupees?
  2. 2.Dev spent ₹8, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  3. 3.80% of a number is 208. What is the number?
  4. 4.69 is 50% of ?
  5. 5.5% of a number is 4. What is the number?
  6. 6.Sara spent ₹177, which is 75% of the pocket money. How much pocket money did Sara have, in rupees?
  7. 7.10% of a number is 27. What is the number?
  8. 8.33 is 12% of ?
  9. 9.Meera spent ₹43, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  10. 10.Sara spent ₹18, which is 12% of the pocket money. How much pocket money did Sara have, in rupees?
  11. 11.258 is 75% of ?
  12. 12.33 is 15% of ?
  13. 13.Dev spent ₹60, which is 40% of the pocket money. How much pocket money did Dev have, in rupees?
  14. 14.Riya spent ₹20, which is 50% of the pocket money. How much pocket money did Riya have, in rupees?
  15. 15.83 is 25% of ?
  16. 16.32 is 20% of ?
  17. 17.60 is 30% of ?
  18. 18.18 is 30% of ?
  19. 19.15% of a number is 57. What is the number?
  20. 20.5% of a number is 15. What is the number?
  21. 21.60% of a number is 21. What is the number?
  22. 22.10% of a number is 22. What is the number?
  23. 23.Isha spent ₹20, which is 25% of the pocket money. How much pocket money did Isha have, in rupees?
  24. 24.Meera spent ₹67, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  25. 25.12 is 12% of ?
  26. 26.40% of a number is 152. What is the number?
  27. 27.55 is 20% of ?
  28. 28.6 is 10% of ?
  29. 29.135 is 60% of ?
  30. 30.20% of a number is 9. What is the number?
  31. 31.22 is 10% of ?
  32. 32.30% of a number is 114. What is the number?
  33. 33.6 is 5% of ?
  34. 34.Diya spent ₹124, which is 80% of the pocket money. How much pocket money did Diya have, in rupees?
  35. 35.94 is 40% of ?
  36. 36.Meera spent ₹9, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  37. 37.164 is 50% of ?
  38. 38.Riya spent ₹6, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?
  39. 39.1 is 5% of ?
  40. 40.15% of a number is 42. What is the number?

Answer key

  1. 240
  2. 32
  3. 260
  4. 138
  5. 80
  6. 236
  7. 270
  8. 275
  9. 215
  10. 150
  11. 344
  12. 220
  13. 150
  14. 40
  15. 332
  16. 160
  17. 200
  18. 60
  19. 380
  20. 300
  21. 35
  22. 220
  23. 80
  24. 335
  25. 100
  26. 380
  27. 275
  28. 60
  29. 225
  30. 45
  31. 220
  32. 380
  33. 120
  34. 155
  35. 235
  36. 75
  37. 328
  38. 40
  39. 20
  40. 280

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