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Percentage lesson 9: Find the whole from a percent · Set 83 · 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. 1.50% of a number is 134. What is the number?
  2. 2.5% of a number is 15. What is the number?
  3. 3.50% of a number is 93. What is the number?
  4. 4.132 is 60% of ?
  5. 5.111 is 30% of ?
  6. 6.40% of a number is 126. What is the number?
  7. 7.Ishaan spent ₹108, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  8. 8.14 is 20% of ?
  9. 9.15% of a number is 33. What is the number?
  10. 10.60% of a number is 132. What is the number?
  11. 11.36 is 80% of ?
  12. 12.Arjun spent ₹7, which is 20% of the pocket money. How much pocket money did Arjun have, in rupees?
  13. 13.Sara spent ₹60, which is 15% of the pocket money. How much pocket money did Sara have, in rupees?
  14. 14.Ishaan spent ₹273, which is 75% of the pocket money. How much pocket money did Ishaan have, in rupees?
  15. 15.50% of a number is 146. What is the number?
  16. 16.Dev spent ₹128, which is 80% of the pocket money. How much pocket money did Dev have, in rupees?
  17. 17.32 is 20% of ?
  18. 18.20% of a number is 55. What is the number?
  19. 19.20% of a number is 60. What is the number?
  20. 20.4 is 20% of ?
  21. 21.60% of a number is 108. What is the number?
  22. 22.10% of a number is 21. What is the number?
  23. 23.10% of a number is 18. What is the number?
  24. 24.15% of a number is 45. What is the number?
  25. 25.20% of a number is 1. What is the number?
  26. 26.Aarav spent ₹9, which is 12% of the pocket money. How much pocket money did Aarav have, in rupees?
  27. 27.20% of a number is 53. What is the number?
  28. 28.69 is 25% of ?
  29. 29.26 is 50% of ?
  30. 30.Riya spent ₹24, which is 30% of the pocket money. How much pocket money did Riya have, in rupees?
  31. 31.50 is 40% of ?
  32. 32.5% of a number is 1. What is the number?
  33. 33.5% of a number is 20. What is the number?
  34. 34.320 is 80% of ?
  35. 35.Aarav spent ₹57, which is 15% of the pocket money. How much pocket money did Aarav have, in rupees?
  36. 36.Arjun spent ₹9, which is 15% of the pocket money. How much pocket money did Arjun have, in rupees?
  37. 37.54 is 50% of ?
  38. 38.Aarav spent ₹18, which is 75% of the pocket money. How much pocket money did Aarav have, in rupees?
  39. 39.117 is 30% of ?
  40. 40.20 is 5% of ?

Answer key

  1. 268
  2. 300
  3. 186
  4. 220
  5. 370
  6. 315
  7. 360
  8. 70
  9. 220
  10. 220
  11. 45
  12. 35
  13. 400
  14. 364
  15. 292
  16. 160
  17. 160
  18. 275
  19. 300
  20. 20
  21. 180
  22. 210
  23. 180
  24. 300
  25. 5
  26. 75
  27. 265
  28. 276
  29. 52
  30. 80
  31. 125
  32. 20
  33. 400
  34. 400
  35. 380
  36. 60
  37. 108
  38. 24
  39. 390
  40. 400

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