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Percentage lesson 9: Find the whole from a percent · Set 346 · 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.

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  1. 1.30% of a number is 3. What is the number?
  2. 2.Aarav spent ₹124, which is 50% of the pocket money. How much pocket money did Aarav have, in rupees?
  3. 3.69 is 75% of ?
  4. 4.21 is 50% of ?
  5. 5.Isha spent ₹13, which is 5% of the pocket money. How much pocket money did Isha have, in rupees?
  6. 6.Dev spent ₹192, which is 60% of the pocket money. How much pocket money did Dev have, in rupees?
  7. 7.80% of a number is 64. What is the number?
  8. 8.Ishaan spent ₹36, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  9. 9.18 is 20% of ?
  10. 10.Ishaan spent ₹24, which is 12% of the pocket money. How much pocket money did Ishaan have, in rupees?
  11. 11.60% of a number is 93. What is the number?
  12. 12.35 is 50% of ?
  13. 13.31 is 50% of ?
  14. 14.99 is 30% of ?
  15. 15.Sara spent ₹84, which is 80% of the pocket money. How much pocket money did Sara have, in rupees?
  16. 16.Aarav spent ₹3, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  17. 17.Arjun spent ₹8, which is 10% of the pocket money. How much pocket money did Arjun have, in rupees?
  18. 18.Rohan spent ₹45, which is 12% of the pocket money. How much pocket money did Rohan have, in rupees?
  19. 19.155 is 50% of ?
  20. 20.60 is 75% of ?
  21. 21.Dev spent ₹39, which is 15% of the pocket money. How much pocket money did Dev have, in rupees?
  22. 22.312 is 80% of ?
  23. 23.138 is 75% of ?
  24. 24.10% of a number is 21. What is the number?
  25. 25.30% of a number is 90. What is the number?
  26. 26.Anaya spent ₹122, which is 40% of the pocket money. How much pocket money did Anaya have, in rupees?
  27. 27.51 is 60% of ?
  28. 28.Isha spent ₹171, which is 60% of the pocket money. How much pocket money did Isha have, in rupees?
  29. 29.18 is 10% of ?
  30. 30.40% of a number is 80. What is the number?
  31. 31.151 is 50% of ?
  32. 32.15% of a number is 48. What is the number?
  33. 33.25% of a number is 28. What is the number?
  34. 34.Anaya spent ₹60, which is 80% of the pocket money. How much pocket money did Anaya have, in rupees?
  35. 35.14 is 5% of ?
  36. 36.50% of a number is 16. What is the number?
  37. 37.10% of a number is 12. What is the number?
  38. 38.5% of a number is 7. What is the number?
  39. 39.Diya spent ₹21, which is 12% of the pocket money. How much pocket money did Diya have, in rupees?
  40. 40.28 is 10% of ?

Answer key

  1. 10
  2. 248
  3. 92
  4. 42
  5. 260
  6. 320
  7. 80
  8. 120
  9. 90
  10. 200
  11. 155
  12. 70
  13. 62
  14. 330
  15. 105
  16. 20
  17. 80
  18. 375
  19. 310
  20. 80
  21. 260
  22. 390
  23. 184
  24. 210
  25. 300
  26. 305
  27. 85
  28. 285
  29. 180
  30. 200
  31. 302
  32. 320
  33. 112
  34. 75
  35. 280
  36. 32
  37. 120
  38. 140
  39. 175
  40. 280

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