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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 194 · 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 550 =
  2. 2.1% of 110 =
  3. 3.50% of 250 =
  4. 4.1% of 300 =
  5. 5.20% of 60 =
  6. 6.15% of 450 =
  7. 7.50% of 290 =
  8. 8.15% of 440 =
  9. 9.20% of 360 =
  10. 10.15% of 820 =
  11. 11.25% of 240 =
  12. 12.5% of 210 =
  13. 13.1% of 690 =
  14. 14.10% of 290 =
  15. 15.5% of 590 =
  16. 16.50% of 350 =
  17. 17.15% of 860 =
  18. 18.20% of 520 =
  19. 19.1% of 290 =
  20. 20.5% of 550 =
  21. 21.20% of 870 =
  22. 22.15% of 250 =
  23. 23.20% of 640 =
  24. 24.1% of 650 =
  25. 25.25% of 630 =
  26. 26.20% of 680 =
  27. 27.10% of 590 =
  28. 28.5% of 790 =
  29. 29.50% of 730 =
  30. 30.25% of 430 =
  31. 31.20% of 860 =
  32. 32.25% of 900 =
  33. 33.15% of 850 =
  34. 34.50% of 220 =
  35. 35.5% of 200 =
  36. 36.10% of 90 =
  37. 37.15% of 400 =
  38. 38.1% of 60 =
  39. 39.25% of 150 =
  40. 40.15% of 770 =

Answer key

  1. 110
  2. 1.1
  3. 125
  4. 3
  5. 12
  6. 67.5
  7. 145
  8. 66
  9. 72
  10. 123
  11. 60
  12. 10.5
  13. 6.9
  14. 29
  15. 29.5
  16. 175
  17. 129
  18. 104
  19. 2.9
  20. 27.5
  21. 174
  22. 37.5
  23. 128
  24. 6.5
  25. 157.5
  26. 136
  27. 59
  28. 39.5
  29. 365
  30. 107.5
  31. 172
  32. 225
  33. 127.5
  34. 110
  35. 10
  36. 9
  37. 60
  38. 0.6
  39. 37.5
  40. 115.5

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