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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 377 · 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 270 =
  2. 2.5% of 890 =
  3. 3.5% of 240 =
  4. 4.5% of 40 =
  5. 5.5% of 30 =
  6. 6.5% of 130 =
  7. 7.5% of 890 =
  8. 8.15% of 280 =
  9. 9.10% of 130 =
  10. 10.25% of 780 =
  11. 11.20% of 720 =
  12. 12.1% of 270 =
  13. 13.50% of 310 =
  14. 14.50% of 830 =
  15. 15.5% of 190 =
  16. 16.5% of 50 =
  17. 17.15% of 770 =
  18. 18.15% of 190 =
  19. 19.15% of 880 =
  20. 20.20% of 700 =
  21. 21.15% of 670 =
  22. 22.1% of 680 =
  23. 23.5% of 440 =
  24. 24.1% of 440 =
  25. 25.50% of 160 =
  26. 26.50% of 530 =
  27. 27.1% of 150 =
  28. 28.15% of 30 =
  29. 29.10% of 90 =
  30. 30.20% of 470 =
  31. 31.50% of 110 =
  32. 32.50% of 50 =
  33. 33.10% of 480 =
  34. 34.5% of 550 =
  35. 35.5% of 20 =
  36. 36.10% of 120 =
  37. 37.5% of 460 =
  38. 38.25% of 700 =
  39. 39.20% of 100 =
  40. 40.10% of 190 =

Answer key

  1. 54
  2. 44.5
  3. 12
  4. 2
  5. 1.5
  6. 6.5
  7. 44.5
  8. 42
  9. 13
  10. 195
  11. 144
  12. 2.7
  13. 155
  14. 415
  15. 9.5
  16. 2.5
  17. 115.5
  18. 28.5
  19. 132
  20. 140
  21. 100.5
  22. 6.8
  23. 22
  24. 4.4
  25. 80
  26. 265
  27. 1.5
  28. 4.5
  29. 9
  30. 94
  31. 55
  32. 25
  33. 48
  34. 27.5
  35. 1
  36. 12
  37. 23
  38. 175
  39. 20
  40. 19

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