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Percentage lesson 9: Find the whole from a percent · Set 472 · 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. 1.24 is 12% of ?
  2. 2.12% of a number is 27. What is the number?
  3. 3.20% of a number is 3. What is the number?
  4. 4.10% of a number is 10. What is the number?
  5. 5.20% of a number is 8. What is the number?
  6. 6.62 is 20% of ?
  7. 7.Meera spent ₹26, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  8. 8.Meera spent ₹30, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  9. 9.Meera spent ₹1, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  10. 10.Aarav spent ₹21, which is 12% of the pocket money. How much pocket money did Aarav have, in rupees?
  11. 11.6 is 12% of ?
  12. 12.30% of a number is 96. What is the number?
  13. 13.102 is 75% of ?
  14. 14.Aarav spent ₹36, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  15. 15.10% of a number is 18. What is the number?
  16. 16.78 is 20% of ?
  17. 17.10% of a number is 19. What is the number?
  18. 18.Dev spent ₹30, which is 12% of the pocket money. How much pocket money did Dev have, in rupees?
  19. 19.5 is 5% of ?
  20. 20.Dev spent ₹12, which is 50% of the pocket money. How much pocket money did Dev have, in rupees?
  21. 21.60% of a number is 3. What is the number?
  22. 22.50% of a number is 25. What is the number?
  23. 23.50% of a number is 178. What is the number?
  24. 24.12 is 40% of ?
  25. 25.Diya spent ₹3, which is 5% of the pocket money. How much pocket money did Diya have, in rupees?
  26. 26.181 is 50% of ?
  27. 27.50% of a number is 155. What is the number?
  28. 28.Aarav spent ₹30, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  29. 29.60% of a number is 117. What is the number?
  30. 30.Meera spent ₹30, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  31. 31.14 is 10% of ?
  32. 32.Anaya spent ₹39, which is 15% of the pocket money. How much pocket money did Anaya have, in rupees?
  33. 33.39 is 25% of ?
  34. 34.20% of a number is 64. What is the number?
  35. 35.Aarav spent ₹45, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  36. 36.117 is 60% of ?
  37. 37.2 is 5% of ?
  38. 38.40% of a number is 56. What is the number?
  39. 39.Aarav spent ₹2, which is 5% of the pocket money. How much pocket money did Aarav have, in rupees?
  40. 40.48 is 30% of ?

Answer key

  1. 200
  2. 225
  3. 15
  4. 100
  5. 40
  6. 310
  7. 260
  8. 250
  9. 10
  10. 175
  11. 50
  12. 320
  13. 136
  14. 180
  15. 180
  16. 390
  17. 190
  18. 250
  19. 100
  20. 24
  21. 5
  22. 50
  23. 356
  24. 30
  25. 60
  26. 362
  27. 310
  28. 200
  29. 195
  30. 150
  31. 140
  32. 260
  33. 156
  34. 320
  35. 300
  36. 195
  37. 40
  38. 140
  39. 40
  40. 160

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