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Percentage lesson 9: Find the whole from a percent · Set 506 · 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.Dev spent ₹81, which is 30% of the pocket money. How much pocket money did Dev have, in rupees?
  2. 2.39 is 12% of ?
  3. 3.30% of a number is 24. What is the number?
  4. 4.12% of a number is 36. What is the number?
  5. 5.Anaya spent ₹82, which is 25% of the pocket money. How much pocket money did Anaya have, in rupees?
  6. 6.20% of a number is 29. What is the number?
  7. 7.Dev spent ₹21, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  8. 8.40% of a number is 82. What is the number?
  9. 9.20% of a number is 19. What is the number?
  10. 10.33 is 12% of ?
  11. 11.15 is 12% of ?
  12. 12.Sara spent ₹15, which is 5% of the pocket money. How much pocket money did Sara have, in rupees?
  13. 13.15% of a number is 6. What is the number?
  14. 14.Riya spent ₹48, which is 30% of the pocket money. How much pocket money did Riya have, in rupees?
  15. 15.Diya spent ₹12, which is 30% of the pocket money. How much pocket money did Diya have, in rupees?
  16. 16.Meera spent ₹24, which is 40% of the pocket money. How much pocket money did Meera have, in rupees?
  17. 17.Kabir spent ₹2, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  18. 18.Ishaan spent ₹45, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  19. 19.Kabir spent ₹30, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  20. 20.20% of a number is 70. What is the number?
  21. 21.19 is 20% of ?
  22. 22.Sara spent ₹21, which is 12% of the pocket money. How much pocket money did Sara have, in rupees?
  23. 23.132 is 50% of ?
  24. 24.10% of a number is 35. What is the number?
  25. 25.20% of a number is 65. What is the number?
  26. 26.210 is 60% of ?
  27. 27.Diya spent ₹17, which is 50% of the pocket money. How much pocket money did Diya have, in rupees?
  28. 28.21 is 75% of ?
  29. 29.Isha spent ₹120, which is 80% of the pocket money. How much pocket money did Isha have, in rupees?
  30. 30.Ishaan spent ₹108, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  31. 31.10% of a number is 2. What is the number?
  32. 32.25% of a number is 15. What is the number?
  33. 33.50% of a number is 20. What is the number?
  34. 34.72 is 60% of ?
  35. 35.Arjun spent ₹90, which is 50% of the pocket money. How much pocket money did Arjun have, in rupees?
  36. 36.30% of a number is 117. What is the number?
  37. 37.15% of a number is 42. What is the number?
  38. 38.Riya spent ₹72, which is 30% of the pocket money. How much pocket money did Riya have, in rupees?
  39. 39.67 is 25% of ?
  40. 40.Sara spent ₹48, which is 30% of the pocket money. How much pocket money did Sara have, in rupees?

Answer key

  1. 270
  2. 325
  3. 80
  4. 300
  5. 328
  6. 145
  7. 105
  8. 205
  9. 95
  10. 275
  11. 125
  12. 300
  13. 40
  14. 160
  15. 40
  16. 60
  17. 20
  18. 375
  19. 300
  20. 350
  21. 95
  22. 175
  23. 264
  24. 350
  25. 325
  26. 350
  27. 34
  28. 28
  29. 150
  30. 360
  31. 20
  32. 60
  33. 40
  34. 120
  35. 180
  36. 390
  37. 280
  38. 240
  39. 268
  40. 160

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