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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 419 · 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 800 =
  2. 2.5% of 790 =
  3. 3.5% of 90 =
  4. 4.10% of 810 =
  5. 5.20% of 800 =
  6. 6.50% of 290 =
  7. 7.1% of 450 =
  8. 8.15% of 350 =
  9. 9.10% of 830 =
  10. 10.10% of 580 =
  11. 11.10% of 370 =
  12. 12.20% of 460 =
  13. 13.1% of 700 =
  14. 14.10% of 310 =
  15. 15.1% of 780 =
  16. 16.5% of 60 =
  17. 17.25% of 850 =
  18. 18.20% of 890 =
  19. 19.10% of 410 =
  20. 20.5% of 320 =
  21. 21.15% of 740 =
  22. 22.1% of 490 =
  23. 23.25% of 760 =
  24. 24.10% of 400 =
  25. 25.25% of 680 =
  26. 26.10% of 500 =
  27. 27.5% of 40 =
  28. 28.1% of 720 =
  29. 29.10% of 210 =
  30. 30.50% of 690 =
  31. 31.50% of 610 =
  32. 32.50% of 580 =
  33. 33.25% of 650 =
  34. 34.5% of 210 =
  35. 35.10% of 150 =
  36. 36.15% of 490 =
  37. 37.50% of 840 =
  38. 38.10% of 390 =
  39. 39.15% of 340 =
  40. 40.1% of 390 =

Answer key

  1. 8
  2. 39.5
  3. 4.5
  4. 81
  5. 160
  6. 145
  7. 4.5
  8. 52.5
  9. 83
  10. 58
  11. 37
  12. 92
  13. 7
  14. 31
  15. 7.8
  16. 3
  17. 212.5
  18. 178
  19. 41
  20. 16
  21. 111
  22. 4.9
  23. 190
  24. 40
  25. 170
  26. 50
  27. 2
  28. 7.2
  29. 21
  30. 345
  31. 305
  32. 290
  33. 162.5
  34. 10.5
  35. 15
  36. 73.5
  37. 420
  38. 39
  39. 51
  40. 3.9

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