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Percentage lesson 9: Find the whole from a percent · Set 360 · 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.Sara spent ₹19, which is 10% of the pocket money. How much pocket money did Sara have, in rupees?
  2. 2.16 is 50% of ?
  3. 3.Dev spent ₹183, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  4. 4.17 is 10% of ?
  5. 5.19 is 10% of ?
  6. 6.2 is 25% of ?
  7. 7.39 is 25% of ?
  8. 8.60% of a number is 153. What is the number?
  9. 9.50% of a number is 128. What is the number?
  10. 10.Arjun spent ₹31, which is 10% of the pocket money. How much pocket money did Arjun have, in rupees?
  11. 11.Kabir spent ₹81, which is 30% of the pocket money. How much pocket money did Kabir have, in rupees?
  12. 12.9 is 20% of ?
  13. 13.15% of a number is 48. What is the number?
  14. 14.18 is 12% of ?
  15. 15.Anaya spent ₹15, which is 5% of the pocket money. How much pocket money did Anaya have, in rupees?
  16. 16.36 is 15% of ?
  17. 17.109 is 50% of ?
  18. 18.42 is 12% of ?
  19. 19.50% of a number is 121. What is the number?
  20. 20.25% of a number is 88. What is the number?
  21. 21.50% of a number is 34. What is the number?
  22. 22.25% of a number is 89. What is the number?
  23. 23.12% of a number is 18. What is the number?
  24. 24.9 is 25% of ?
  25. 25.81 is 30% of ?
  26. 26.174 is 75% of ?
  27. 27.Riya spent ₹28, which is 10% of the pocket money. How much pocket money did Riya have, in rupees?
  28. 28.Diya spent ₹24, which is 25% of the pocket money. How much pocket money did Diya have, in rupees?
  29. 29.20% of a number is 16. What is the number?
  30. 30.21 is 12% of ?
  31. 31.42 is 60% of ?
  32. 32.Ishaan spent ₹135, which is 50% of the pocket money. How much pocket money did Ishaan have, in rupees?
  33. 33.Kabir spent ₹191, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  34. 34.Isha spent ₹47, which is 20% of the pocket money. How much pocket money did Isha have, in rupees?
  35. 35.77 is 20% of ?
  36. 36.25% of a number is 32. What is the number?
  37. 37.30% of a number is 6. What is the number?
  38. 38.Rohan spent ₹45, which is 15% of the pocket money. How much pocket money did Rohan have, in rupees?
  39. 39.12 is 5% of ?
  40. 40.Kabir spent ₹69, which is 30% of the pocket money. How much pocket money did Kabir have, in rupees?

Answer key

  1. 190
  2. 32
  3. 305
  4. 170
  5. 190
  6. 8
  7. 156
  8. 255
  9. 256
  10. 310
  11. 270
  12. 45
  13. 320
  14. 150
  15. 300
  16. 240
  17. 218
  18. 350
  19. 242
  20. 352
  21. 68
  22. 356
  23. 150
  24. 36
  25. 270
  26. 232
  27. 280
  28. 96
  29. 80
  30. 175
  31. 70
  32. 270
  33. 382
  34. 235
  35. 385
  36. 128
  37. 20
  38. 300
  39. 240
  40. 230

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