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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 375 · 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 600 =
  2. 2.50% of 190 =
  3. 3.20% of 90 =
  4. 4.10% of 690 =
  5. 5.5% of 320 =
  6. 6.10% of 660 =
  7. 7.15% of 690 =
  8. 8.20% of 230 =
  9. 9.15% of 450 =
  10. 10.10% of 70 =
  11. 11.25% of 110 =
  12. 12.1% of 160 =
  13. 13.1% of 100 =
  14. 14.10% of 500 =
  15. 15.10% of 340 =
  16. 16.50% of 150 =
  17. 17.25% of 440 =
  18. 18.20% of 450 =
  19. 19.20% of 90 =
  20. 20.10% of 130 =
  21. 21.5% of 380 =
  22. 22.25% of 400 =
  23. 23.20% of 310 =
  24. 24.1% of 750 =
  25. 25.20% of 120 =
  26. 26.10% of 670 =
  27. 27.5% of 150 =
  28. 28.15% of 100 =
  29. 29.25% of 130 =
  30. 30.15% of 550 =
  31. 31.15% of 100 =
  32. 32.25% of 840 =
  33. 33.50% of 530 =
  34. 34.25% of 450 =
  35. 35.15% of 820 =
  36. 36.15% of 850 =
  37. 37.10% of 480 =
  38. 38.20% of 400 =
  39. 39.1% of 380 =
  40. 40.10% of 30 =

Answer key

  1. 30
  2. 95
  3. 18
  4. 69
  5. 16
  6. 66
  7. 103.5
  8. 46
  9. 67.5
  10. 7
  11. 27.5
  12. 1.6
  13. 1
  14. 50
  15. 34
  16. 75
  17. 110
  18. 90
  19. 18
  20. 13
  21. 19
  22. 100
  23. 62
  24. 7.5
  25. 24
  26. 67
  27. 7.5
  28. 15
  29. 32.5
  30. 82.5
  31. 15
  32. 210
  33. 265
  34. 112.5
  35. 123
  36. 127.5
  37. 48
  38. 80
  39. 3.8
  40. 3

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