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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 670 · 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 760 =
  2. 2.50% of 630 =
  3. 3.20% of 820 =
  4. 4.10% of 400 =
  5. 5.20% of 260 =
  6. 6.1% of 360 =
  7. 7.25% of 60 =
  8. 8.25% of 730 =
  9. 9.15% of 710 =
  10. 10.10% of 490 =
  11. 11.50% of 660 =
  12. 12.15% of 370 =
  13. 13.15% of 430 =
  14. 14.25% of 500 =
  15. 15.20% of 60 =
  16. 16.1% of 320 =
  17. 17.1% of 220 =
  18. 18.25% of 570 =
  19. 19.15% of 660 =
  20. 20.5% of 190 =
  21. 21.5% of 60 =
  22. 22.1% of 760 =
  23. 23.5% of 330 =
  24. 24.50% of 810 =
  25. 25.50% of 880 =
  26. 26.10% of 900 =
  27. 27.5% of 480 =
  28. 28.50% of 800 =
  29. 29.10% of 180 =
  30. 30.10% of 740 =
  31. 31.25% of 750 =
  32. 32.20% of 60 =
  33. 33.10% of 700 =
  34. 34.10% of 660 =
  35. 35.15% of 220 =
  36. 36.50% of 260 =
  37. 37.5% of 670 =
  38. 38.25% of 850 =
  39. 39.1% of 20 =
  40. 40.10% of 270 =

Answer key

  1. 7.6
  2. 315
  3. 164
  4. 40
  5. 52
  6. 3.6
  7. 15
  8. 182.5
  9. 106.5
  10. 49
  11. 330
  12. 55.5
  13. 64.5
  14. 125
  15. 12
  16. 3.2
  17. 2.2
  18. 142.5
  19. 99
  20. 9.5
  21. 3
  22. 7.6
  23. 16.5
  24. 405
  25. 440
  26. 90
  27. 24
  28. 400
  29. 18
  30. 74
  31. 187.5
  32. 12
  33. 70
  34. 66
  35. 33
  36. 130
  37. 33.5
  38. 212.5
  39. 0.2
  40. 27

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