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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 795 · 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. 1.50% of 800 =
  2. 2.50% of 530 =
  3. 3.25% of 370 =
  4. 4.25% of 200 =
  5. 5.25% of 550 =
  6. 6.5% of 400 =
  7. 7.5% of 520 =
  8. 8.15% of 460 =
  9. 9.20% of 760 =
  10. 10.5% of 370 =
  11. 11.1% of 330 =
  12. 12.1% of 460 =
  13. 13.5% of 220 =
  14. 14.1% of 740 =
  15. 15.5% of 810 =
  16. 16.10% of 140 =
  17. 17.1% of 350 =
  18. 18.50% of 330 =
  19. 19.15% of 410 =
  20. 20.1% of 160 =
  21. 21.10% of 830 =
  22. 22.20% of 860 =
  23. 23.1% of 770 =
  24. 24.25% of 530 =
  25. 25.5% of 900 =
  26. 26.10% of 860 =
  27. 27.5% of 810 =
  28. 28.5% of 160 =
  29. 29.20% of 870 =
  30. 30.15% of 900 =
  31. 31.25% of 270 =
  32. 32.15% of 40 =
  33. 33.25% of 500 =
  34. 34.15% of 570 =
  35. 35.10% of 150 =
  36. 36.10% of 560 =
  37. 37.1% of 470 =
  38. 38.15% of 660 =
  39. 39.50% of 310 =
  40. 40.1% of 130 =

Answer key

  1. 400
  2. 265
  3. 92.5
  4. 50
  5. 137.5
  6. 20
  7. 26
  8. 69
  9. 152
  10. 18.5
  11. 3.3
  12. 4.6
  13. 11
  14. 7.4
  15. 40.5
  16. 14
  17. 3.5
  18. 165
  19. 61.5
  20. 1.6
  21. 83
  22. 172
  23. 7.7
  24. 132.5
  25. 45
  26. 86
  27. 40.5
  28. 8
  29. 174
  30. 135
  31. 67.5
  32. 6
  33. 125
  34. 85.5
  35. 15
  36. 56
  37. 4.7
  38. 99
  39. 155
  40. 1.3

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