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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 607 · 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 260 =
  2. 2.5% of 840 =
  3. 3.15% of 170 =
  4. 4.1% of 160 =
  5. 5.20% of 760 =
  6. 6.10% of 780 =
  7. 7.25% of 790 =
  8. 8.5% of 570 =
  9. 9.25% of 800 =
  10. 10.15% of 310 =
  11. 11.15% of 570 =
  12. 12.20% of 870 =
  13. 13.1% of 540 =
  14. 14.1% of 40 =
  15. 15.50% of 160 =
  16. 16.10% of 440 =
  17. 17.5% of 50 =
  18. 18.25% of 770 =
  19. 19.25% of 690 =
  20. 20.25% of 660 =
  21. 21.15% of 570 =
  22. 22.15% of 680 =
  23. 23.20% of 140 =
  24. 24.15% of 300 =
  25. 25.5% of 410 =
  26. 26.10% of 300 =
  27. 27.50% of 240 =
  28. 28.25% of 740 =
  29. 29.1% of 720 =
  30. 30.50% of 40 =
  31. 31.1% of 340 =
  32. 32.10% of 270 =
  33. 33.5% of 90 =
  34. 34.25% of 900 =
  35. 35.20% of 280 =
  36. 36.20% of 270 =
  37. 37.15% of 500 =
  38. 38.50% of 270 =
  39. 39.1% of 30 =
  40. 40.1% of 870 =

Answer key

  1. 52
  2. 42
  3. 25.5
  4. 1.6
  5. 152
  6. 78
  7. 197.5
  8. 28.5
  9. 200
  10. 46.5
  11. 85.5
  12. 174
  13. 5.4
  14. 0.4
  15. 80
  16. 44
  17. 2.5
  18. 192.5
  19. 172.5
  20. 165
  21. 85.5
  22. 102
  23. 28
  24. 45
  25. 20.5
  26. 30
  27. 120
  28. 185
  29. 7.2
  30. 20
  31. 3.4
  32. 27
  33. 4.5
  34. 225
  35. 56
  36. 54
  37. 75
  38. 135
  39. 0.3
  40. 8.7

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