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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 399 · 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. 1.25% of 590 =
  2. 2.20% of 730 =
  3. 3.50% of 270 =
  4. 4.50% of 150 =
  5. 5.25% of 810 =
  6. 6.10% of 600 =
  7. 7.25% of 860 =
  8. 8.10% of 740 =
  9. 9.20% of 510 =
  10. 10.20% of 540 =
  11. 11.15% of 450 =
  12. 12.5% of 150 =
  13. 13.25% of 640 =
  14. 14.50% of 210 =
  15. 15.1% of 670 =
  16. 16.50% of 170 =
  17. 17.15% of 190 =
  18. 18.5% of 150 =
  19. 19.1% of 610 =
  20. 20.20% of 380 =
  21. 21.25% of 640 =
  22. 22.25% of 160 =
  23. 23.50% of 620 =
  24. 24.25% of 400 =
  25. 25.50% of 610 =
  26. 26.15% of 470 =
  27. 27.20% of 540 =
  28. 28.10% of 390 =
  29. 29.20% of 810 =
  30. 30.1% of 420 =
  31. 31.20% of 900 =
  32. 32.20% of 900 =
  33. 33.5% of 800 =
  34. 34.1% of 700 =
  35. 35.5% of 250 =
  36. 36.10% of 410 =
  37. 37.10% of 100 =
  38. 38.5% of 480 =
  39. 39.10% of 620 =
  40. 40.15% of 250 =

Answer key

  1. 147.5
  2. 146
  3. 135
  4. 75
  5. 202.5
  6. 60
  7. 215
  8. 74
  9. 102
  10. 108
  11. 67.5
  12. 7.5
  13. 160
  14. 105
  15. 6.7
  16. 85
  17. 28.5
  18. 7.5
  19. 6.1
  20. 76
  21. 160
  22. 40
  23. 310
  24. 100
  25. 305
  26. 70.5
  27. 108
  28. 39
  29. 162
  30. 4.2
  31. 180
  32. 180
  33. 40
  34. 7
  35. 12.5
  36. 41
  37. 10
  38. 24
  39. 62
  40. 37.5

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