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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 334 · 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 60 =
  2. 2.50% of 300 =
  3. 3.50% of 870 =
  4. 4.5% of 400 =
  5. 5.10% of 140 =
  6. 6.25% of 450 =
  7. 7.15% of 650 =
  8. 8.10% of 730 =
  9. 9.50% of 510 =
  10. 10.50% of 50 =
  11. 11.20% of 610 =
  12. 12.50% of 420 =
  13. 13.20% of 400 =
  14. 14.1% of 670 =
  15. 15.5% of 30 =
  16. 16.25% of 660 =
  17. 17.15% of 260 =
  18. 18.5% of 360 =
  19. 19.10% of 790 =
  20. 20.50% of 800 =
  21. 21.25% of 340 =
  22. 22.10% of 760 =
  23. 23.25% of 250 =
  24. 24.25% of 870 =
  25. 25.20% of 540 =
  26. 26.20% of 700 =
  27. 27.15% of 420 =
  28. 28.50% of 300 =
  29. 29.1% of 550 =
  30. 30.20% of 850 =
  31. 31.5% of 860 =
  32. 32.10% of 530 =
  33. 33.1% of 610 =
  34. 34.15% of 830 =
  35. 35.1% of 690 =
  36. 36.10% of 310 =
  37. 37.10% of 60 =
  38. 38.50% of 530 =
  39. 39.10% of 250 =
  40. 40.5% of 100 =

Answer key

  1. 12
  2. 150
  3. 435
  4. 20
  5. 14
  6. 112.5
  7. 97.5
  8. 73
  9. 255
  10. 25
  11. 122
  12. 210
  13. 80
  14. 6.7
  15. 1.5
  16. 165
  17. 39
  18. 18
  19. 79
  20. 400
  21. 85
  22. 76
  23. 62.5
  24. 217.5
  25. 108
  26. 140
  27. 63
  28. 150
  29. 5.5
  30. 170
  31. 43
  32. 53
  33. 6.1
  34. 124.5
  35. 6.9
  36. 31
  37. 6
  38. 265
  39. 25
  40. 5

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