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Percentage lesson 9: Find the whole from a percent · Set 323 · 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.Kabir spent ₹2, which is 20% of the pocket money. How much pocket money did Kabir have, in rupees?
  2. 2.10% of a number is 20. What is the number?
  3. 3.80 is 40% of ?
  4. 4.30% of a number is 3. What is the number?
  5. 5.Kabir spent ₹34, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?
  6. 6.72 is 20% of ?
  7. 7.80% of a number is 96. What is the number?
  8. 8.Ishaan spent ₹25, which is 20% of the pocket money. How much pocket money did Ishaan have, in rupees?
  9. 9.234 is 60% of ?
  10. 10.Aarav spent ₹12, which is 5% of the pocket money. How much pocket money did Aarav have, in rupees?
  11. 11.Kabir spent ₹72, which is 40% of the pocket money. How much pocket money did Kabir have, in rupees?
  12. 12.Riya spent ₹18, which is 30% of the pocket money. How much pocket money did Riya have, in rupees?
  13. 13.Kabir spent ₹27, which is 30% of the pocket money. How much pocket money did Kabir have, in rupees?
  14. 14.18 is 40% of ?
  15. 15.Dev spent ₹30, which is 15% of the pocket money. How much pocket money did Dev have, in rupees?
  16. 16.27 is 50% of ?
  17. 17.40% of a number is 76. What is the number?
  18. 18.187 is 50% of ?
  19. 19.21 is 12% of ?
  20. 20.75% of a number is 96. What is the number?
  21. 21.Aarav spent ₹15, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  22. 22.Sara spent ₹10, which is 10% of the pocket money. How much pocket money did Sara have, in rupees?
  23. 23.74 is 40% of ?
  24. 24.Dev spent ₹31, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  25. 25.25% of a number is 26. What is the number?
  26. 26.5% of a number is 12. What is the number?
  27. 27.12% of a number is 33. What is the number?
  28. 28.17 is 25% of ?
  29. 29.80% of a number is 64. What is the number?
  30. 30.12 is 12% of ?
  31. 31.40% of a number is 8. What is the number?
  32. 32.25% of a number is 97. What is the number?
  33. 33.32 is 10% of ?
  34. 34.80% of a number is 160. What is the number?
  35. 35.40% of a number is 116. What is the number?
  36. 36.10% of a number is 27. What is the number?
  37. 37.30% of a number is 51. What is the number?
  38. 38.126 is 60% of ?
  39. 39.Riya spent ₹248, which is 80% of the pocket money. How much pocket money did Riya have, in rupees?
  40. 40.21 is 15% of ?

Answer key

  1. 10
  2. 200
  3. 200
  4. 10
  5. 340
  6. 360
  7. 120
  8. 125
  9. 390
  10. 240
  11. 180
  12. 60
  13. 90
  14. 45
  15. 200
  16. 54
  17. 190
  18. 374
  19. 175
  20. 128
  21. 100
  22. 100
  23. 185
  24. 124
  25. 104
  26. 240
  27. 275
  28. 68
  29. 80
  30. 100
  31. 20
  32. 388
  33. 320
  34. 200
  35. 290
  36. 270
  37. 170
  38. 210
  39. 310
  40. 140

Free percentage lessons, practice and worksheets at talentjr.in/how-to-calculate-percentage