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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 306 · 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. 1.20% of 510 =
  2. 2.5% of 60 =
  3. 3.5% of 800 =
  4. 4.25% of 470 =
  5. 5.10% of 860 =
  6. 6.1% of 70 =
  7. 7.15% of 40 =
  8. 8.5% of 250 =
  9. 9.15% of 380 =
  10. 10.15% of 240 =
  11. 11.50% of 50 =
  12. 12.5% of 590 =
  13. 13.50% of 880 =
  14. 14.15% of 360 =
  15. 15.15% of 130 =
  16. 16.20% of 520 =
  17. 17.20% of 220 =
  18. 18.1% of 650 =
  19. 19.10% of 20 =
  20. 20.5% of 610 =
  21. 21.25% of 220 =
  22. 22.20% of 640 =
  23. 23.50% of 300 =
  24. 24.5% of 170 =
  25. 25.25% of 590 =
  26. 26.1% of 240 =
  27. 27.10% of 830 =
  28. 28.50% of 110 =
  29. 29.20% of 350 =
  30. 30.25% of 210 =
  31. 31.25% of 550 =
  32. 32.25% of 50 =
  33. 33.25% of 760 =
  34. 34.15% of 820 =
  35. 35.5% of 210 =
  36. 36.15% of 240 =
  37. 37.10% of 310 =
  38. 38.15% of 510 =
  39. 39.5% of 620 =
  40. 40.50% of 120 =

Answer key

  1. 102
  2. 3
  3. 40
  4. 117.5
  5. 86
  6. 0.7
  7. 6
  8. 12.5
  9. 57
  10. 36
  11. 25
  12. 29.5
  13. 440
  14. 54
  15. 19.5
  16. 104
  17. 44
  18. 6.5
  19. 2
  20. 30.5
  21. 55
  22. 128
  23. 150
  24. 8.5
  25. 147.5
  26. 2.4
  27. 83
  28. 55
  29. 70
  30. 52.5
  31. 137.5
  32. 12.5
  33. 190
  34. 123
  35. 10.5
  36. 36
  37. 31
  38. 76.5
  39. 31
  40. 60

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