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Percentage lesson 9: Find the whole from a percent · Set 836 · 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 39. What is the number?
  2. 2.Diya spent ₹15, which is 30% of the pocket money. How much pocket money did Diya have, in rupees?
  3. 3.34 is 20% of ?
  4. 4.40 is 10% of ?
  5. 5.Meera spent ₹39, which is 60% of the pocket money. How much pocket money did Meera have, in rupees?
  6. 6.Riya spent ₹112, which is 40% of the pocket money. How much pocket money did Riya have, in rupees?
  7. 7.15% of a number is 36. What is the number?
  8. 8.121 is 50% of ?
  9. 9.33 is 12% of ?
  10. 10.12 is 75% of ?
  11. 11.Sara spent ₹12, which is 15% of the pocket money. How much pocket money did Sara have, in rupees?
  12. 12.61 is 20% of ?
  13. 13.Kabir spent ₹81, which is 30% of the pocket money. How much pocket money did Kabir have, in rupees?
  14. 14.268 is 80% of ?
  15. 15.20% of a number is 58. What is the number?
  16. 16.Anaya spent ₹22, which is 40% of the pocket money. How much pocket money did Anaya have, in rupees?
  17. 17.36 is 20% of ?
  18. 18.4 is 5% of ?
  19. 19.62 is 25% of ?
  20. 20.26 is 20% of ?
  21. 21.40% of a number is 70. What is the number?
  22. 22.80% of a number is 68. What is the number?
  23. 23.201 is 60% of ?
  24. 24.150 is 75% of ?
  25. 25.10% of a number is 30. What is the number?
  26. 26.108 is 40% of ?
  27. 27.80% of a number is 192. What is the number?
  28. 28.50% of a number is 86. What is the number?
  29. 29.5% of a number is 8. What is the number?
  30. 30.75% of a number is 9. What is the number?
  31. 31.50% of a number is 136. What is the number?
  32. 32.54 is 75% of ?
  33. 33.12% of a number is 39. What is the number?
  34. 34.20% of a number is 13. What is the number?
  35. 35.40% of a number is 30. What is the number?
  36. 36.38 is 20% of ?
  37. 37.Sara spent ₹21, which is 12% of the pocket money. How much pocket money did Sara have, in rupees?
  38. 38.10% of a number is 7. What is the number?
  39. 39.176 is 50% of ?
  40. 40.Rohan spent ₹84, which is 60% of the pocket money. How much pocket money did Rohan have, in rupees?

Answer key

  1. 390
  2. 50
  3. 170
  4. 400
  5. 65
  6. 280
  7. 240
  8. 242
  9. 275
  10. 16
  11. 80
  12. 305
  13. 270
  14. 335
  15. 290
  16. 55
  17. 180
  18. 80
  19. 248
  20. 130
  21. 175
  22. 85
  23. 335
  24. 200
  25. 300
  26. 270
  27. 240
  28. 172
  29. 160
  30. 12
  31. 272
  32. 72
  33. 325
  34. 65
  35. 75
  36. 190
  37. 175
  38. 70
  39. 352
  40. 140

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