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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 239 · 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. 1.1% of 200 =
  2. 2.10% of 480 =
  3. 3.50% of 350 =
  4. 4.15% of 160 =
  5. 5.20% of 660 =
  6. 6.5% of 410 =
  7. 7.25% of 640 =
  8. 8.10% of 470 =
  9. 9.5% of 810 =
  10. 10.15% of 160 =
  11. 11.50% of 640 =
  12. 12.50% of 160 =
  13. 13.10% of 550 =
  14. 14.25% of 200 =
  15. 15.15% of 480 =
  16. 16.15% of 430 =
  17. 17.50% of 740 =
  18. 18.50% of 340 =
  19. 19.1% of 40 =
  20. 20.10% of 110 =
  21. 21.20% of 820 =
  22. 22.50% of 380 =
  23. 23.1% of 60 =
  24. 24.25% of 210 =
  25. 25.50% of 600 =
  26. 26.10% of 800 =
  27. 27.25% of 810 =
  28. 28.20% of 310 =
  29. 29.50% of 830 =
  30. 30.20% of 480 =
  31. 31.20% of 490 =
  32. 32.15% of 830 =
  33. 33.50% of 610 =
  34. 34.10% of 370 =
  35. 35.25% of 390 =
  36. 36.10% of 870 =
  37. 37.20% of 890 =
  38. 38.10% of 90 =
  39. 39.10% of 30 =
  40. 40.15% of 160 =

Answer key

  1. 2
  2. 48
  3. 175
  4. 24
  5. 132
  6. 20.5
  7. 160
  8. 47
  9. 40.5
  10. 24
  11. 320
  12. 80
  13. 55
  14. 50
  15. 72
  16. 64.5
  17. 370
  18. 170
  19. 0.4
  20. 11
  21. 164
  22. 190
  23. 0.6
  24. 52.5
  25. 300
  26. 80
  27. 202.5
  28. 62
  29. 415
  30. 96
  31. 98
  32. 124.5
  33. 305
  34. 37
  35. 97.5
  36. 87
  37. 178
  38. 9
  39. 3
  40. 24

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