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Percentage lesson 9: Find the whole from a percent · Set 56 · 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.Rohan spent ₹12, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?
  2. 2.60% of a number is 216. What is the number?
  3. 3.14 is 20% of ?
  4. 4.219 is 75% of ?
  5. 5.Dev spent ₹30, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  6. 6.80% of a number is 32. What is the number?
  7. 7.80% of a number is 104. What is the number?
  8. 8.Kabir spent ₹11, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  9. 9.Meera spent ₹72, which is 80% of the pocket money. How much pocket money did Meera have, in rupees?
  10. 10.14 is 10% of ?
  11. 11.75% of a number is 54. What is the number?
  12. 12.58 is 20% of ?
  13. 13.Kabir spent ₹5, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  14. 14.25% of a number is 75. What is the number?
  15. 15.60% of a number is 57. What is the number?
  16. 16.40% of a number is 134. What is the number?
  17. 17.40% of a number is 78. What is the number?
  18. 18.40% of a number is 96. What is the number?
  19. 19.40% of a number is 136. What is the number?
  20. 20.5% of a number is 16. What is the number?
  21. 21.15% of a number is 9. What is the number?
  22. 22.Rohan spent ₹6, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?
  23. 23.Aarav spent ₹39, which is 25% of the pocket money. How much pocket money did Aarav have, in rupees?
  24. 24.21 is 30% of ?
  25. 25.11 is 25% of ?
  26. 26.23 is 20% of ?
  27. 27.Dev spent ₹65, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  28. 28.20% of a number is 62. What is the number?
  29. 29.26 is 20% of ?
  30. 30.75 is 30% of ?
  31. 31.Anaya spent ₹51, which is 25% of the pocket money. How much pocket money did Anaya have, in rupees?
  32. 32.36 is 30% of ?
  33. 33.28 is 10% of ?
  34. 34.3 is 5% of ?
  35. 35.3 is 20% of ?
  36. 36.25% of a number is 17. What is the number?
  37. 37.40% of a number is 2. What is the number?
  38. 38.60% of a number is 72. What is the number?
  39. 39.80% of a number is 36. What is the number?
  40. 40.30% of a number is 102. What is the number?

Answer key

  1. 120
  2. 360
  3. 70
  4. 292
  5. 150
  6. 40
  7. 130
  8. 110
  9. 90
  10. 140
  11. 72
  12. 290
  13. 50
  14. 300
  15. 95
  16. 335
  17. 195
  18. 240
  19. 340
  20. 320
  21. 60
  22. 60
  23. 156
  24. 70
  25. 44
  26. 115
  27. 325
  28. 310
  29. 130
  30. 250
  31. 204
  32. 120
  33. 280
  34. 60
  35. 15
  36. 68
  37. 5
  38. 120
  39. 45
  40. 340

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