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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 219 · 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. 1.1% of 260 =
  2. 2.15% of 640 =
  3. 3.25% of 800 =
  4. 4.25% of 110 =
  5. 5.25% of 620 =
  6. 6.5% of 280 =
  7. 7.10% of 840 =
  8. 8.25% of 640 =
  9. 9.50% of 130 =
  10. 10.5% of 670 =
  11. 11.20% of 220 =
  12. 12.15% of 880 =
  13. 13.25% of 810 =
  14. 14.15% of 90 =
  15. 15.25% of 710 =
  16. 16.15% of 820 =
  17. 17.50% of 420 =
  18. 18.1% of 640 =
  19. 19.50% of 260 =
  20. 20.5% of 690 =
  21. 21.5% of 70 =
  22. 22.25% of 210 =
  23. 23.20% of 140 =
  24. 24.1% of 650 =
  25. 25.5% of 720 =
  26. 26.15% of 490 =
  27. 27.5% of 20 =
  28. 28.25% of 730 =
  29. 29.5% of 840 =
  30. 30.5% of 500 =
  31. 31.5% of 620 =
  32. 32.15% of 720 =
  33. 33.10% of 710 =
  34. 34.10% of 830 =
  35. 35.15% of 520 =
  36. 36.1% of 860 =
  37. 37.20% of 470 =
  38. 38.15% of 450 =
  39. 39.15% of 830 =
  40. 40.5% of 700 =

Answer key

  1. 2.6
  2. 96
  3. 200
  4. 27.5
  5. 155
  6. 14
  7. 84
  8. 160
  9. 65
  10. 33.5
  11. 44
  12. 132
  13. 202.5
  14. 13.5
  15. 177.5
  16. 123
  17. 210
  18. 6.4
  19. 130
  20. 34.5
  21. 3.5
  22. 52.5
  23. 28
  24. 6.5
  25. 36
  26. 73.5
  27. 1
  28. 182.5
  29. 42
  30. 25
  31. 31
  32. 108
  33. 71
  34. 83
  35. 78
  36. 8.6
  37. 94
  38. 67.5
  39. 124.5
  40. 35

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