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Percentage lesson 9: Find the whole from a percent · Set 350 · 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. 1.50% of a number is 64. What is the number?
  2. 2.Diya spent ₹177, which is 75% of the pocket money. How much pocket money did Diya have, in rupees?
  3. 3.75% of a number is 21. What is the number?
  4. 4.60% of a number is 93. What is the number?
  5. 5.20% of a number is 32. What is the number?
  6. 6.Dev spent ₹272, which is 80% of the pocket money. How much pocket money did Dev have, in rupees?
  7. 7.2 is 5% of ?
  8. 8.5 is 50% of ?
  9. 9.12% of a number is 18. What is the number?
  10. 10.Diya spent ₹55, which is 25% of the pocket money. How much pocket money did Diya have, in rupees?
  11. 11.Meera spent ₹15, which is 5% of the pocket money. How much pocket money did Meera have, in rupees?
  12. 12.38 is 20% of ?
  13. 13.Dev spent ₹6, which is 5% of the pocket money. How much pocket money did Dev have, in rupees?
  14. 14.60% of a number is 123. What is the number?
  15. 15.Arjun spent ₹36, which is 30% of the pocket money. How much pocket money did Arjun have, in rupees?
  16. 16.50% of a number is 33. What is the number?
  17. 17.50% of a number is 34. What is the number?
  18. 18.60% of a number is 54. What is the number?
  19. 19.10% of a number is 9. What is the number?
  20. 20.88 is 40% of ?
  21. 21.248 is 80% of ?
  22. 22.Meera spent ₹72, which is 30% of the pocket money. How much pocket money did Meera have, in rupees?
  23. 23.10% of a number is 39. What is the number?
  24. 24.75% of a number is 288. What is the number?
  25. 25.Arjun spent ₹72, which is 80% of the pocket money. How much pocket money did Arjun have, in rupees?
  26. 26.11 is 5% of ?
  27. 27.12% of a number is 42. What is the number?
  28. 28.40% of a number is 10. What is the number?
  29. 29.Meera spent ₹45, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  30. 30.Isha spent ₹13, which is 5% of the pocket money. How much pocket money did Isha have, in rupees?
  31. 31.Dev spent ₹30, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  32. 32.75% of a number is 66. What is the number?
  33. 33.20% of a number is 73. What is the number?
  34. 34.90 is 60% of ?
  35. 35.40% of a number is 122. What is the number?
  36. 36.13 is 5% of ?
  37. 37.5% of a number is 3. What is the number?
  38. 38.12 is 30% of ?
  39. 39.Anaya spent ₹120, which is 60% of the pocket money. How much pocket money did Anaya have, in rupees?
  40. 40.Diya spent ₹75, which is 30% of the pocket money. How much pocket money did Diya have, in rupees?

Answer key

  1. 128
  2. 236
  3. 28
  4. 155
  5. 160
  6. 340
  7. 40
  8. 10
  9. 150
  10. 220
  11. 300
  12. 190
  13. 120
  14. 205
  15. 120
  16. 66
  17. 68
  18. 90
  19. 90
  20. 220
  21. 310
  22. 240
  23. 390
  24. 384
  25. 90
  26. 220
  27. 350
  28. 25
  29. 375
  30. 260
  31. 50
  32. 88
  33. 365
  34. 150
  35. 305
  36. 260
  37. 60
  38. 40
  39. 200
  40. 250

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