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Percentage lesson 9: Find the whole from a percent · Set 950 · 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.Arjun spent ₹108, which is 30% of the pocket money. How much pocket money did Arjun have, in rupees?
  2. 2.Riya spent ₹33, which is 50% of the pocket money. How much pocket money did Riya have, in rupees?
  3. 3.Dev spent ₹94, which is 50% of the pocket money. How much pocket money did Dev have, in rupees?
  4. 4.216 is 80% of ?
  5. 5.12% of a number is 3. What is the number?
  6. 6.Aarav spent ₹150, which is 75% of the pocket money. How much pocket money did Aarav have, in rupees?
  7. 7.10% of a number is 5. What is the number?
  8. 8.Sara spent ₹64, which is 80% of the pocket money. How much pocket money did Sara have, in rupees?
  9. 9.Riya spent ₹137, which is 50% of the pocket money. How much pocket money did Riya have, in rupees?
  10. 10.47 is 25% of ?
  11. 11.Sara spent ₹6, which is 15% of the pocket money. How much pocket money did Sara have, in rupees?
  12. 12.75 is 75% of ?
  13. 13.272 is 80% of ?
  14. 14.3 is 12% of ?
  15. 15.39 is 30% of ?
  16. 16.40% of a number is 60. What is the number?
  17. 17.5% of a number is 14. What is the number?
  18. 18.Arjun spent ₹17, which is 25% of the pocket money. How much pocket money did Arjun have, in rupees?
  19. 19.Diya spent ₹48, which is 12% of the pocket money. How much pocket money did Diya have, in rupees?
  20. 20.Sara spent ₹4, which is 5% of the pocket money. How much pocket money did Sara have, in rupees?
  21. 21.Aarav spent ₹68, which is 80% of the pocket money. How much pocket money did Aarav have, in rupees?
  22. 22.20% of a number is 76. What is the number?
  23. 23.Diya spent ₹30, which is 12% of the pocket money. How much pocket money did Diya have, in rupees?
  24. 24.50% of a number is 51. What is the number?
  25. 25.60% of a number is 120. What is the number?
  26. 26.Riya spent ₹55, which is 20% of the pocket money. How much pocket money did Riya have, in rupees?
  27. 27.Ishaan spent ₹240, which is 60% of the pocket money. How much pocket money did Ishaan have, in rupees?
  28. 28.10% of a number is 25. What is the number?
  29. 29.17 is 5% of ?
  30. 30.Sara spent ₹12, which is 12% of the pocket money. How much pocket money did Sara have, in rupees?
  31. 31.50% of a number is 74. What is the number?
  32. 32.30% of a number is 78. What is the number?
  33. 33.Rohan spent ₹64, which is 80% of the pocket money. How much pocket money did Rohan have, in rupees?
  34. 34.Kabir spent ₹55, which is 50% of the pocket money. How much pocket money did Kabir have, in rupees?
  35. 35.62 is 25% of ?
  36. 36.15 is 30% of ?
  37. 37.15% of a number is 12. What is the number?
  38. 38.50% of a number is 11. What is the number?
  39. 39.Kabir spent ₹21, which is 12% of the pocket money. How much pocket money did Kabir have, in rupees?
  40. 40.40 is 10% of ?

Answer key

  1. 360
  2. 66
  3. 188
  4. 270
  5. 25
  6. 200
  7. 50
  8. 80
  9. 274
  10. 188
  11. 40
  12. 100
  13. 340
  14. 25
  15. 130
  16. 150
  17. 280
  18. 68
  19. 400
  20. 80
  21. 85
  22. 380
  23. 250
  24. 102
  25. 200
  26. 275
  27. 400
  28. 250
  29. 340
  30. 100
  31. 148
  32. 260
  33. 80
  34. 110
  35. 248
  36. 50
  37. 80
  38. 22
  39. 175
  40. 400

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