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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 87 · 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. 1.50% of 700 =
  2. 2.5% of 640 =
  3. 3.20% of 130 =
  4. 4.20% of 240 =
  5. 5.25% of 410 =
  6. 6.1% of 50 =
  7. 7.50% of 800 =
  8. 8.20% of 60 =
  9. 9.1% of 900 =
  10. 10.25% of 400 =
  11. 11.15% of 230 =
  12. 12.1% of 120 =
  13. 13.50% of 190 =
  14. 14.10% of 20 =
  15. 15.25% of 250 =
  16. 16.25% of 200 =
  17. 17.15% of 550 =
  18. 18.5% of 780 =
  19. 19.1% of 20 =
  20. 20.15% of 760 =
  21. 21.20% of 870 =
  22. 22.25% of 70 =
  23. 23.25% of 790 =
  24. 24.50% of 830 =
  25. 25.20% of 520 =
  26. 26.5% of 300 =
  27. 27.1% of 710 =
  28. 28.1% of 650 =
  29. 29.50% of 360 =
  30. 30.20% of 60 =
  31. 31.15% of 80 =
  32. 32.25% of 810 =
  33. 33.50% of 580 =
  34. 34.10% of 490 =
  35. 35.5% of 170 =
  36. 36.50% of 70 =
  37. 37.1% of 420 =
  38. 38.50% of 530 =
  39. 39.25% of 540 =
  40. 40.5% of 900 =

Answer key

  1. 350
  2. 32
  3. 26
  4. 48
  5. 102.5
  6. 0.5
  7. 400
  8. 12
  9. 9
  10. 100
  11. 34.5
  12. 1.2
  13. 95
  14. 2
  15. 62.5
  16. 50
  17. 82.5
  18. 39
  19. 0.2
  20. 114
  21. 174
  22. 17.5
  23. 197.5
  24. 415
  25. 104
  26. 15
  27. 7.1
  28. 6.5
  29. 180
  30. 12
  31. 12
  32. 202.5
  33. 290
  34. 49
  35. 8.5
  36. 35
  37. 4.2
  38. 265
  39. 135
  40. 45

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