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Percentage lesson 9: Find the whole from a percent · Set 499 · 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. 1.10% of a number is 38. What is the number?
  2. 2.20% of a number is 36. What is the number?
  3. 3.60% of a number is 84. What is the number?
  4. 4.80% of a number is 236. What is the number?
  5. 5.5 is 10% of ?
  6. 6.Riya spent ₹12, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?
  7. 7.Kabir spent ₹99, which is 60% of the pocket money. How much pocket money did Kabir have, in rupees?
  8. 8.Aarav spent ₹33, which is 10% of the pocket money. How much pocket money did Aarav have, in rupees?
  9. 9.13 is 20% of ?
  10. 10.12% of a number is 12. What is the number?
  11. 11.20% of a number is 15. What is the number?
  12. 12.33 is 10% of ?
  13. 13.25 is 20% of ?
  14. 14.Isha spent ₹108, which is 75% of the pocket money. How much pocket money did Isha have, in rupees?
  15. 15.88 is 40% of ?
  16. 16.3 is 20% of ?
  17. 17.50% of a number is 97. What is the number?
  18. 18.48 is 40% of ?
  19. 19.12% of a number is 30. What is the number?
  20. 20.40% of a number is 148. What is the number?
  21. 21.5% of a number is 14. What is the number?
  22. 22.Rohan spent ₹93, which is 30% of the pocket money. How much pocket money did Rohan have, in rupees?
  23. 23.27 is 12% of ?
  24. 24.93 is 75% of ?
  25. 25.83 is 25% of ?
  26. 26.15 is 15% of ?
  27. 27.Kabir spent ₹105, which is 75% of the pocket money. How much pocket money did Kabir have, in rupees?
  28. 28.Meera spent ₹6, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  29. 29.1 is 50% of ?
  30. 30.42 is 40% of ?
  31. 31.Ishaan spent ₹6, which is 10% of the pocket money. How much pocket money did Ishaan have, in rupees?
  32. 32.30% of a number is 3. What is the number?
  33. 33.Anaya spent ₹183, which is 75% of the pocket money. How much pocket money did Anaya have, in rupees?
  34. 34.Kabir spent ₹9, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  35. 35.73 is 25% of ?
  36. 36.Meera spent ₹162, which is 60% of the pocket money. How much pocket money did Meera have, in rupees?
  37. 37.Meera spent ₹4, which is 40% of the pocket money. How much pocket money did Meera have, in rupees?
  38. 38.24 is 15% of ?
  39. 39.Kabir spent ₹109, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  40. 40.Isha spent ₹85, which is 50% of the pocket money. How much pocket money did Isha have, in rupees?

Answer key

  1. 380
  2. 180
  3. 140
  4. 295
  5. 50
  6. 80
  7. 165
  8. 330
  9. 65
  10. 100
  11. 75
  12. 330
  13. 125
  14. 144
  15. 220
  16. 15
  17. 194
  18. 120
  19. 250
  20. 370
  21. 280
  22. 310
  23. 225
  24. 124
  25. 332
  26. 100
  27. 140
  28. 50
  29. 2
  30. 105
  31. 60
  32. 10
  33. 244
  34. 90
  35. 292
  36. 270
  37. 10
  38. 160
  39. 218
  40. 170

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