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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 192 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.1% of 110 =
  2. 2.15% of 320 =
  3. 3.15% of 230 =
  4. 4.20% of 760 =
  5. 5.15% of 160 =
  6. 6.5% of 170 =
  7. 7.15% of 780 =
  8. 8.50% of 230 =
  9. 9.50% of 70 =
  10. 10.25% of 890 =
  11. 11.25% of 50 =
  12. 12.5% of 140 =
  13. 13.50% of 250 =
  14. 14.10% of 340 =
  15. 15.10% of 460 =
  16. 16.1% of 340 =
  17. 17.25% of 530 =
  18. 18.20% of 20 =
  19. 19.5% of 710 =
  20. 20.50% of 750 =
  21. 21.15% of 200 =
  22. 22.20% of 220 =
  23. 23.5% of 160 =
  24. 24.50% of 500 =
  25. 25.1% of 580 =
  26. 26.25% of 440 =
  27. 27.20% of 110 =
  28. 28.50% of 330 =
  29. 29.15% of 650 =
  30. 30.20% of 610 =
  31. 31.20% of 220 =
  32. 32.10% of 320 =
  33. 33.50% of 280 =
  34. 34.20% of 300 =
  35. 35.20% of 380 =
  36. 36.5% of 530 =
  37. 37.50% of 380 =
  38. 38.10% of 350 =
  39. 39.15% of 790 =
  40. 40.15% of 340 =

Answer key

  1. 1.1
  2. 48
  3. 34.5
  4. 152
  5. 24
  6. 8.5
  7. 117
  8. 115
  9. 35
  10. 222.5
  11. 12.5
  12. 7
  13. 125
  14. 34
  15. 46
  16. 3.4
  17. 132.5
  18. 4
  19. 35.5
  20. 375
  21. 30
  22. 44
  23. 8
  24. 250
  25. 5.8
  26. 110
  27. 22
  28. 165
  29. 97.5
  30. 122
  31. 44
  32. 32
  33. 140
  34. 60
  35. 76
  36. 26.5
  37. 190
  38. 35
  39. 118.5
  40. 51

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