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Percentage lesson 9: Find the whole from a percent · Set 25 · 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.Aarav spent ₹66, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  2. 2.Meera spent ₹30, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  3. 3.40% of a number is 158. What is the number?
  4. 4.Ishaan spent ₹42, which is 15% of the pocket money. How much pocket money did Ishaan have, in rupees?
  5. 5.20% of a number is 62. What is the number?
  6. 6.6 is 5% of ?
  7. 7.75% of a number is 60. What is the number?
  8. 8.60% of a number is 216. What is the number?
  9. 9.25% of a number is 82. What is the number?
  10. 10.35 is 10% of ?
  11. 11.80% of a number is 280. What is the number?
  12. 12.25% of a number is 12. What is the number?
  13. 13.46 is 20% of ?
  14. 14.33 is 30% of ?
  15. 15.4 is 40% of ?
  16. 16.102 is 40% of ?
  17. 17.30% of a number is 111. What is the number?
  18. 18.Rohan spent ₹36, which is 80% of the pocket money. How much pocket money did Rohan have, in rupees?
  19. 19.20% of a number is 31. What is the number?
  20. 20.96 is 25% of ?
  21. 21.25% of a number is 34. What is the number?
  22. 22.25% of a number is 87. What is the number?
  23. 23.Dev spent ₹231, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  24. 24.12% of a number is 33. What is the number?
  25. 25.80% of a number is 208. What is the number?
  26. 26.Isha spent ₹24, which is 10% of the pocket money. How much pocket money did Isha have, in rupees?
  27. 27.5% of a number is 5. What is the number?
  28. 28.198 is 75% of ?
  29. 29.60% of a number is 3. What is the number?
  30. 30.75% of a number is 84. What is the number?
  31. 31.75% of a number is 36. What is the number?
  32. 32.30% of a number is 15. What is the number?
  33. 33.22 is 25% of ?
  34. 34.Isha spent ₹34, which is 10% of the pocket money. How much pocket money did Isha have, in rupees?
  35. 35.Isha spent ₹18, which is 20% of the pocket money. How much pocket money did Isha have, in rupees?
  36. 36.75% of a number is 240. What is the number?
  37. 37.20 is 5% of ?
  38. 38.40% of a number is 142. What is the number?
  39. 39.20% of a number is 6. What is the number?
  40. 40.40% of a number is 34. What is the number?

Answer key

  1. 330
  2. 300
  3. 395
  4. 280
  5. 310
  6. 120
  7. 80
  8. 360
  9. 328
  10. 350
  11. 350
  12. 48
  13. 230
  14. 110
  15. 10
  16. 255
  17. 370
  18. 45
  19. 155
  20. 384
  21. 136
  22. 348
  23. 385
  24. 275
  25. 260
  26. 240
  27. 100
  28. 264
  29. 5
  30. 112
  31. 48
  32. 50
  33. 88
  34. 340
  35. 90
  36. 320
  37. 400
  38. 355
  39. 30
  40. 85

Free percentage lessons, practice and worksheets at talentjr.in/how-to-calculate-percentage