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Percentage lesson 9: Find the whole from a percent · Set 620 · 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. 1.30% of a number is 12. What is the number?
  2. 2.Riya spent ₹144, which is 80% of the pocket money. How much pocket money did Riya have, in rupees?
  3. 3.7 is 10% of ?
  4. 4.Ishaan spent ₹188, which is 80% of the pocket money. How much pocket money did Ishaan have, in rupees?
  5. 5.Isha spent ₹152, which is 50% of the pocket money. How much pocket money did Isha have, in rupees?
  6. 6.18 is 25% of ?
  7. 7.5% of a number is 12. What is the number?
  8. 8.249 is 75% of ?
  9. 9.50% of a number is 180. What is the number?
  10. 10.Kabir spent ₹158, which is 40% of the pocket money. How much pocket money did Kabir have, in rupees?
  11. 11.15% of a number is 15. What is the number?
  12. 12.15 is 12% of ?
  13. 13.10% of a number is 9. What is the number?
  14. 14.50% of a number is 87. What is the number?
  15. 15.84 is 80% of ?
  16. 16.4 is 80% of ?
  17. 17.Anaya spent ₹3, which is 30% of the pocket money. How much pocket money did Anaya have, in rupees?
  18. 18.42 is 30% of ?
  19. 19.20 is 5% of ?
  20. 20.80% of a number is 112. What is the number?
  21. 21.45 is 12% of ?
  22. 22.Ishaan spent ₹30, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  23. 23.12% of a number is 30. What is the number?
  24. 24.80% of a number is 96. What is the number?
  25. 25.56 is 25% of ?
  26. 26.80% of a number is 160. What is the number?
  27. 27.60% of a number is 210. What is the number?
  28. 28.32 is 10% of ?
  29. 29.40% of a number is 78. What is the number?
  30. 30.72 is 25% of ?
  31. 31.50% of a number is 8. What is the number?
  32. 32.25% of a number is 45. What is the number?
  33. 33.42 is 40% of ?
  34. 34.Aarav spent ₹27, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  35. 35.Aarav spent ₹12, which is 5% of the pocket money. How much pocket money did Aarav have, in rupees?
  36. 36.75 is 25% of ?
  37. 37.73 is 20% of ?
  38. 38.10% of a number is 34. What is the number?
  39. 39.60% of a number is 90. What is the number?
  40. 40.79 is 20% of ?

Answer key

  1. 40
  2. 180
  3. 70
  4. 235
  5. 304
  6. 72
  7. 240
  8. 332
  9. 360
  10. 395
  11. 100
  12. 125
  13. 90
  14. 174
  15. 105
  16. 5
  17. 10
  18. 140
  19. 400
  20. 140
  21. 375
  22. 60
  23. 250
  24. 120
  25. 224
  26. 200
  27. 350
  28. 320
  29. 195
  30. 288
  31. 16
  32. 180
  33. 105
  34. 180
  35. 240
  36. 300
  37. 365
  38. 340
  39. 150
  40. 395

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