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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 711 · 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 600 =
  2. 2.1% of 130 =
  3. 3.20% of 390 =
  4. 4.20% of 450 =
  5. 5.20% of 780 =
  6. 6.25% of 880 =
  7. 7.10% of 100 =
  8. 8.20% of 580 =
  9. 9.25% of 410 =
  10. 10.5% of 890 =
  11. 11.5% of 300 =
  12. 12.15% of 540 =
  13. 13.20% of 470 =
  14. 14.15% of 570 =
  15. 15.10% of 160 =
  16. 16.10% of 350 =
  17. 17.25% of 740 =
  18. 18.20% of 270 =
  19. 19.10% of 230 =
  20. 20.50% of 60 =
  21. 21.50% of 420 =
  22. 22.10% of 180 =
  23. 23.50% of 800 =
  24. 24.5% of 40 =
  25. 25.20% of 560 =
  26. 26.5% of 740 =
  27. 27.25% of 270 =
  28. 28.10% of 180 =
  29. 29.15% of 900 =
  30. 30.5% of 760 =
  31. 31.25% of 550 =
  32. 32.25% of 520 =
  33. 33.50% of 870 =
  34. 34.20% of 610 =
  35. 35.5% of 150 =
  36. 36.5% of 380 =
  37. 37.50% of 220 =
  38. 38.10% of 360 =
  39. 39.10% of 150 =
  40. 40.1% of 750 =

Answer key

  1. 60
  2. 1.3
  3. 78
  4. 90
  5. 156
  6. 220
  7. 10
  8. 116
  9. 102.5
  10. 44.5
  11. 15
  12. 81
  13. 94
  14. 85.5
  15. 16
  16. 35
  17. 185
  18. 54
  19. 23
  20. 30
  21. 210
  22. 18
  23. 400
  24. 2
  25. 112
  26. 37
  27. 67.5
  28. 18
  29. 135
  30. 38
  31. 137.5
  32. 130
  33. 435
  34. 122
  35. 7.5
  36. 19
  37. 110
  38. 36
  39. 15
  40. 7.5

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