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Percentage lesson 9: Find the whole from a percent · Set 242 · 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. 1.268 is 80% of ?
  2. 2.80% of a number is 108. What is the number?
  3. 3.18 is 10% of ?
  4. 4.40% of a number is 98. What is the number?
  5. 5.Dev spent ₹100, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  6. 6.Meera spent ₹29, which is 10% of the pocket money. How much pocket money did Meera have, in rupees?
  7. 7.25% of a number is 72. What is the number?
  8. 8.Diya spent ₹304, which is 80% of the pocket money. How much pocket money did Diya have, in rupees?
  9. 9.15% of a number is 48. What is the number?
  10. 10.45 is 75% of ?
  11. 11.Ishaan spent ₹272, which is 80% of the pocket money. How much pocket money did Ishaan have, in rupees?
  12. 12.Rohan spent ₹2, which is 40% of the pocket money. How much pocket money did Rohan have, in rupees?
  13. 13.77 is 20% of ?
  14. 14.Kabir spent ₹234, which is 60% of the pocket money. How much pocket money did Kabir have, in rupees?
  15. 15.51 is 25% of ?
  16. 16.Riya spent ₹12, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?
  17. 17.15% of a number is 24. What is the number?
  18. 18.4 is 80% of ?
  19. 19.Meera spent ₹6, which is 12% of the pocket money. How much pocket money did Meera have, in rupees?
  20. 20.Anaya spent ₹38, which is 10% of the pocket money. How much pocket money did Anaya have, in rupees?
  21. 21.60% of a number is 45. What is the number?
  22. 22.Aarav spent ₹71, which is 25% of the pocket money. How much pocket money did Aarav have, in rupees?
  23. 23.102 is 75% of ?
  24. 24.72 is 20% of ?
  25. 25.75% of a number is 258. What is the number?
  26. 26.88 is 80% of ?
  27. 27.5% of a number is 10. What is the number?
  28. 28.Rohan spent ₹304, which is 80% of the pocket money. How much pocket money did Rohan have, in rupees?
  29. 29.Kabir spent ₹2, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  30. 30.25% of a number is 31. What is the number?
  31. 31.Ishaan spent ₹7, which is 20% of the pocket money. How much pocket money did Ishaan have, in rupees?
  32. 32.117 is 30% of ?
  33. 33.Riya spent ₹16, which is 80% of the pocket money. How much pocket money did Riya have, in rupees?
  34. 34.40% of a number is 96. What is the number?
  35. 35.Diya spent ₹28, which is 20% of the pocket money. How much pocket money did Diya have, in rupees?
  36. 36.196 is 50% of ?
  37. 37.Rohan spent ₹37, which is 25% of the pocket money. How much pocket money did Rohan have, in rupees?
  38. 38.Rohan spent ₹60, which is 40% of the pocket money. How much pocket money did Rohan have, in rupees?
  39. 39.Sara spent ₹51, which is 15% of the pocket money. How much pocket money did Sara have, in rupees?
  40. 40.70 is 20% of ?

Answer key

  1. 335
  2. 135
  3. 180
  4. 245
  5. 400
  6. 290
  7. 288
  8. 380
  9. 320
  10. 60
  11. 340
  12. 5
  13. 385
  14. 390
  15. 204
  16. 80
  17. 160
  18. 5
  19. 50
  20. 380
  21. 75
  22. 284
  23. 136
  24. 360
  25. 344
  26. 110
  27. 200
  28. 380
  29. 20
  30. 124
  31. 35
  32. 390
  33. 20
  34. 240
  35. 140
  36. 392
  37. 148
  38. 150
  39. 340
  40. 350

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