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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 429 · 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 110 =
  2. 2.20% of 60 =
  3. 3.20% of 900 =
  4. 4.15% of 780 =
  5. 5.10% of 200 =
  6. 6.10% of 580 =
  7. 7.50% of 660 =
  8. 8.1% of 290 =
  9. 9.15% of 760 =
  10. 10.5% of 870 =
  11. 11.20% of 660 =
  12. 12.20% of 710 =
  13. 13.15% of 630 =
  14. 14.1% of 70 =
  15. 15.1% of 750 =
  16. 16.50% of 640 =
  17. 17.1% of 50 =
  18. 18.10% of 20 =
  19. 19.20% of 40 =
  20. 20.15% of 530 =
  21. 21.10% of 60 =
  22. 22.1% of 120 =
  23. 23.20% of 140 =
  24. 24.5% of 880 =
  25. 25.25% of 850 =
  26. 26.15% of 540 =
  27. 27.5% of 750 =
  28. 28.1% of 110 =
  29. 29.15% of 860 =
  30. 30.5% of 740 =
  31. 31.20% of 170 =
  32. 32.50% of 350 =
  33. 33.25% of 500 =
  34. 34.5% of 660 =
  35. 35.5% of 230 =
  36. 36.25% of 110 =
  37. 37.20% of 140 =
  38. 38.25% of 60 =
  39. 39.15% of 430 =
  40. 40.15% of 550 =

Answer key

  1. 5.5
  2. 12
  3. 180
  4. 117
  5. 20
  6. 58
  7. 330
  8. 2.9
  9. 114
  10. 43.5
  11. 132
  12. 142
  13. 94.5
  14. 0.7
  15. 7.5
  16. 320
  17. 0.5
  18. 2
  19. 8
  20. 79.5
  21. 6
  22. 1.2
  23. 28
  24. 44
  25. 212.5
  26. 81
  27. 37.5
  28. 1.1
  29. 129
  30. 37
  31. 34
  32. 175
  33. 125
  34. 33
  35. 11.5
  36. 27.5
  37. 28
  38. 15
  39. 64.5
  40. 82.5

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