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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 625 · 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. 1.25% of 160 =
  2. 2.5% of 740 =
  3. 3.50% of 590 =
  4. 4.25% of 400 =
  5. 5.10% of 860 =
  6. 6.5% of 420 =
  7. 7.15% of 850 =
  8. 8.10% of 640 =
  9. 9.15% of 770 =
  10. 10.1% of 620 =
  11. 11.5% of 360 =
  12. 12.5% of 150 =
  13. 13.50% of 240 =
  14. 14.1% of 120 =
  15. 15.15% of 690 =
  16. 16.10% of 570 =
  17. 17.20% of 140 =
  18. 18.10% of 400 =
  19. 19.1% of 860 =
  20. 20.50% of 900 =
  21. 21.10% of 310 =
  22. 22.1% of 220 =
  23. 23.20% of 610 =
  24. 24.10% of 80 =
  25. 25.5% of 80 =
  26. 26.25% of 840 =
  27. 27.20% of 230 =
  28. 28.15% of 210 =
  29. 29.10% of 630 =
  30. 30.20% of 900 =
  31. 31.15% of 440 =
  32. 32.50% of 620 =
  33. 33.25% of 610 =
  34. 34.5% of 350 =
  35. 35.10% of 400 =
  36. 36.10% of 190 =
  37. 37.20% of 160 =
  38. 38.25% of 470 =
  39. 39.15% of 450 =
  40. 40.1% of 580 =

Answer key

  1. 40
  2. 37
  3. 295
  4. 100
  5. 86
  6. 21
  7. 127.5
  8. 64
  9. 115.5
  10. 6.2
  11. 18
  12. 7.5
  13. 120
  14. 1.2
  15. 103.5
  16. 57
  17. 28
  18. 40
  19. 8.6
  20. 450
  21. 31
  22. 2.2
  23. 122
  24. 8
  25. 4
  26. 210
  27. 46
  28. 31.5
  29. 63
  30. 180
  31. 66
  32. 310
  33. 152.5
  34. 17.5
  35. 40
  36. 19
  37. 32
  38. 117.5
  39. 67.5
  40. 5.8

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