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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 580 · 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 220 =
  2. 2.20% of 680 =
  3. 3.5% of 360 =
  4. 4.20% of 240 =
  5. 5.20% of 310 =
  6. 6.25% of 170 =
  7. 7.1% of 860 =
  8. 8.50% of 230 =
  9. 9.5% of 150 =
  10. 10.5% of 880 =
  11. 11.15% of 60 =
  12. 12.5% of 650 =
  13. 13.50% of 680 =
  14. 14.5% of 690 =
  15. 15.5% of 580 =
  16. 16.15% of 20 =
  17. 17.20% of 190 =
  18. 18.1% of 20 =
  19. 19.25% of 650 =
  20. 20.10% of 200 =
  21. 21.5% of 610 =
  22. 22.20% of 660 =
  23. 23.15% of 180 =
  24. 24.25% of 490 =
  25. 25.25% of 270 =
  26. 26.5% of 60 =
  27. 27.10% of 250 =
  28. 28.50% of 90 =
  29. 29.1% of 550 =
  30. 30.50% of 720 =
  31. 31.1% of 330 =
  32. 32.10% of 810 =
  33. 33.25% of 380 =
  34. 34.5% of 650 =
  35. 35.1% of 120 =
  36. 36.25% of 60 =
  37. 37.10% of 760 =
  38. 38.50% of 240 =
  39. 39.50% of 710 =
  40. 40.25% of 570 =

Answer key

  1. 11
  2. 136
  3. 18
  4. 48
  5. 62
  6. 42.5
  7. 8.6
  8. 115
  9. 7.5
  10. 44
  11. 9
  12. 32.5
  13. 340
  14. 34.5
  15. 29
  16. 3
  17. 38
  18. 0.2
  19. 162.5
  20. 20
  21. 30.5
  22. 132
  23. 27
  24. 122.5
  25. 67.5
  26. 3
  27. 25
  28. 45
  29. 5.5
  30. 360
  31. 3.3
  32. 81
  33. 95
  34. 32.5
  35. 1.2
  36. 15
  37. 76
  38. 120
  39. 355
  40. 142.5

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