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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 531 · 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. 1.10% of 200 =
  2. 2.1% of 60 =
  3. 3.25% of 440 =
  4. 4.5% of 50 =
  5. 5.5% of 520 =
  6. 6.20% of 360 =
  7. 7.10% of 500 =
  8. 8.20% of 320 =
  9. 9.1% of 190 =
  10. 10.15% of 710 =
  11. 11.15% of 390 =
  12. 12.15% of 900 =
  13. 13.50% of 420 =
  14. 14.5% of 780 =
  15. 15.1% of 60 =
  16. 16.50% of 540 =
  17. 17.5% of 750 =
  18. 18.1% of 230 =
  19. 19.10% of 890 =
  20. 20.20% of 310 =
  21. 21.15% of 290 =
  22. 22.1% of 650 =
  23. 23.15% of 680 =
  24. 24.5% of 700 =
  25. 25.1% of 20 =
  26. 26.10% of 430 =
  27. 27.5% of 20 =
  28. 28.10% of 900 =
  29. 29.10% of 660 =
  30. 30.25% of 670 =
  31. 31.5% of 450 =
  32. 32.50% of 680 =
  33. 33.20% of 540 =
  34. 34.15% of 60 =
  35. 35.10% of 60 =
  36. 36.1% of 160 =
  37. 37.5% of 230 =
  38. 38.5% of 70 =
  39. 39.50% of 500 =
  40. 40.50% of 760 =

Answer key

  1. 20
  2. 0.6
  3. 110
  4. 2.5
  5. 26
  6. 72
  7. 50
  8. 64
  9. 1.9
  10. 106.5
  11. 58.5
  12. 135
  13. 210
  14. 39
  15. 0.6
  16. 270
  17. 37.5
  18. 2.3
  19. 89
  20. 62
  21. 43.5
  22. 6.5
  23. 102
  24. 35
  25. 0.2
  26. 43
  27. 1
  28. 90
  29. 66
  30. 167.5
  31. 22.5
  32. 340
  33. 108
  34. 9
  35. 6
  36. 1.6
  37. 11.5
  38. 3.5
  39. 250
  40. 380

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