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Percentage lesson 9: Find the whole from a percent · Set 768 · 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. 1.36 is 10% of ?
  2. 2.Dev spent ₹20, which is 40% of the pocket money. How much pocket money did Dev have, in rupees?
  3. 3.12% of a number is 24. What is the number?
  4. 4.1 is 10% of ?
  5. 5.Anaya spent ₹52, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  6. 6.40% of a number is 98. What is the number?
  7. 7.6 is 5% of ?
  8. 8.10% of a number is 35. What is the number?
  9. 9.30% of a number is 111. What is the number?
  10. 10.Anaya spent ₹39, which is 20% of the pocket money. How much pocket money did Anaya have, in rupees?
  11. 11.3 is 30% of ?
  12. 12.Sara spent ₹148, which is 40% of the pocket money. How much pocket money did Sara have, in rupees?
  13. 13.25 is 10% of ?
  14. 14.10 is 5% of ?
  15. 15.25% of a number is 86. What is the number?
  16. 16.75% of a number is 291. What is the number?
  17. 17.80% of a number is 200. What is the number?
  18. 18.25% of a number is 51. What is the number?
  19. 19.30% of a number is 72. What is the number?
  20. 20.Rohan spent ₹22, which is 10% of the pocket money. How much pocket money did Rohan have, in rupees?
  21. 21.66 is 30% of ?
  22. 22.Dev spent ₹12, which is 15% of the pocket money. How much pocket money did Dev have, in rupees?
  23. 23.15 is 75% of ?
  24. 24.Dev spent ₹24, which is 12% of the pocket money. How much pocket money did Dev have, in rupees?
  25. 25.30% of a number is 18. What is the number?
  26. 26.234 is 75% of ?
  27. 27.20% of a number is 41. What is the number?
  28. 28.75% of a number is 102. What is the number?
  29. 29.20% of a number is 10. What is the number?
  30. 30.28 is 25% of ?
  31. 31.Sara spent ₹240, which is 80% of the pocket money. How much pocket money did Sara have, in rupees?
  32. 32.20% of a number is 15. What is the number?
  33. 33.Aarav spent ₹77, which is 20% of the pocket money. How much pocket money did Aarav have, in rupees?
  34. 34.20% of a number is 51. What is the number?
  35. 35.Arjun spent ₹3, which is 12% of the pocket money. How much pocket money did Arjun have, in rupees?
  36. 36.Kabir spent ₹66, which is 30% of the pocket money. How much pocket money did Kabir have, in rupees?
  37. 37.Aarav spent ₹80, which is 50% of the pocket money. How much pocket money did Aarav have, in rupees?
  38. 38.Kabir spent ₹25, which is 25% of the pocket money. How much pocket money did Kabir have, in rupees?
  39. 39.12% of a number is 21. What is the number?
  40. 40.35 is 20% of ?

Answer key

  1. 360
  2. 50
  3. 200
  4. 10
  5. 260
  6. 245
  7. 120
  8. 350
  9. 370
  10. 195
  11. 10
  12. 370
  13. 250
  14. 200
  15. 344
  16. 388
  17. 250
  18. 204
  19. 240
  20. 220
  21. 220
  22. 80
  23. 20
  24. 200
  25. 60
  26. 312
  27. 205
  28. 136
  29. 50
  30. 112
  31. 300
  32. 75
  33. 385
  34. 255
  35. 25
  36. 220
  37. 160
  38. 100
  39. 175
  40. 175

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