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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 616 · 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. 1.50% of 330 =
  2. 2.20% of 460 =
  3. 3.50% of 720 =
  4. 4.25% of 580 =
  5. 5.50% of 160 =
  6. 6.15% of 760 =
  7. 7.10% of 340 =
  8. 8.10% of 760 =
  9. 9.1% of 530 =
  10. 10.5% of 510 =
  11. 11.5% of 110 =
  12. 12.25% of 230 =
  13. 13.10% of 310 =
  14. 14.1% of 70 =
  15. 15.50% of 150 =
  16. 16.1% of 340 =
  17. 17.20% of 520 =
  18. 18.20% of 440 =
  19. 19.15% of 780 =
  20. 20.20% of 680 =
  21. 21.10% of 90 =
  22. 22.25% of 190 =
  23. 23.50% of 180 =
  24. 24.25% of 680 =
  25. 25.20% of 200 =
  26. 26.20% of 510 =
  27. 27.5% of 330 =
  28. 28.15% of 280 =
  29. 29.1% of 790 =
  30. 30.25% of 220 =
  31. 31.50% of 850 =
  32. 32.25% of 500 =
  33. 33.15% of 440 =
  34. 34.15% of 590 =
  35. 35.10% of 200 =
  36. 36.20% of 800 =
  37. 37.25% of 80 =
  38. 38.5% of 40 =
  39. 39.10% of 590 =
  40. 40.50% of 630 =

Answer key

  1. 165
  2. 92
  3. 360
  4. 145
  5. 80
  6. 114
  7. 34
  8. 76
  9. 5.3
  10. 25.5
  11. 5.5
  12. 57.5
  13. 31
  14. 0.7
  15. 75
  16. 3.4
  17. 104
  18. 88
  19. 117
  20. 136
  21. 9
  22. 47.5
  23. 90
  24. 170
  25. 40
  26. 102
  27. 16.5
  28. 42
  29. 7.9
  30. 55
  31. 425
  32. 125
  33. 66
  34. 88.5
  35. 20
  36. 160
  37. 20
  38. 2
  39. 59
  40. 315

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