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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 626 · 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. 1.5% of 100 =
  2. 2.1% of 680 =
  3. 3.25% of 180 =
  4. 4.50% of 480 =
  5. 5.25% of 610 =
  6. 6.20% of 760 =
  7. 7.25% of 270 =
  8. 8.5% of 880 =
  9. 9.5% of 150 =
  10. 10.50% of 370 =
  11. 11.1% of 870 =
  12. 12.5% of 300 =
  13. 13.10% of 800 =
  14. 14.10% of 850 =
  15. 15.20% of 750 =
  16. 16.20% of 310 =
  17. 17.1% of 490 =
  18. 18.10% of 550 =
  19. 19.5% of 150 =
  20. 20.50% of 140 =
  21. 21.25% of 420 =
  22. 22.20% of 890 =
  23. 23.15% of 860 =
  24. 24.20% of 300 =
  25. 25.15% of 850 =
  26. 26.1% of 460 =
  27. 27.10% of 560 =
  28. 28.20% of 740 =
  29. 29.15% of 180 =
  30. 30.10% of 420 =
  31. 31.25% of 410 =
  32. 32.15% of 500 =
  33. 33.1% of 80 =
  34. 34.50% of 670 =
  35. 35.20% of 90 =
  36. 36.50% of 850 =
  37. 37.5% of 440 =
  38. 38.50% of 320 =
  39. 39.25% of 250 =
  40. 40.10% of 100 =

Answer key

  1. 5
  2. 6.8
  3. 45
  4. 240
  5. 152.5
  6. 152
  7. 67.5
  8. 44
  9. 7.5
  10. 185
  11. 8.7
  12. 15
  13. 80
  14. 85
  15. 150
  16. 62
  17. 4.9
  18. 55
  19. 7.5
  20. 70
  21. 105
  22. 178
  23. 129
  24. 60
  25. 127.5
  26. 4.6
  27. 56
  28. 148
  29. 27
  30. 42
  31. 102.5
  32. 75
  33. 0.8
  34. 335
  35. 18
  36. 425
  37. 22
  38. 160
  39. 62.5
  40. 10

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