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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 578 · 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 190 =
  2. 2.25% of 480 =
  3. 3.5% of 800 =
  4. 4.10% of 210 =
  5. 5.20% of 600 =
  6. 6.5% of 400 =
  7. 7.15% of 850 =
  8. 8.25% of 240 =
  9. 9.5% of 350 =
  10. 10.5% of 710 =
  11. 11.25% of 240 =
  12. 12.50% of 330 =
  13. 13.10% of 270 =
  14. 14.25% of 520 =
  15. 15.10% of 860 =
  16. 16.20% of 130 =
  17. 17.50% of 790 =
  18. 18.50% of 710 =
  19. 19.1% of 800 =
  20. 20.5% of 200 =
  21. 21.1% of 600 =
  22. 22.20% of 770 =
  23. 23.20% of 700 =
  24. 24.5% of 490 =
  25. 25.5% of 810 =
  26. 26.10% of 870 =
  27. 27.50% of 410 =
  28. 28.50% of 70 =
  29. 29.10% of 160 =
  30. 30.50% of 130 =
  31. 31.15% of 310 =
  32. 32.25% of 500 =
  33. 33.1% of 130 =
  34. 34.10% of 900 =
  35. 35.1% of 410 =
  36. 36.10% of 500 =
  37. 37.50% of 220 =
  38. 38.15% of 690 =
  39. 39.15% of 580 =
  40. 40.50% of 80 =

Answer key

  1. 9.5
  2. 120
  3. 40
  4. 21
  5. 120
  6. 20
  7. 127.5
  8. 60
  9. 17.5
  10. 35.5
  11. 60
  12. 165
  13. 27
  14. 130
  15. 86
  16. 26
  17. 395
  18. 355
  19. 8
  20. 10
  21. 6
  22. 154
  23. 140
  24. 24.5
  25. 40.5
  26. 87
  27. 205
  28. 35
  29. 16
  30. 65
  31. 46.5
  32. 125
  33. 1.3
  34. 90
  35. 4.1
  36. 50
  37. 110
  38. 103.5
  39. 87
  40. 40

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