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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 637 · 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 350 =
  2. 2.1% of 290 =
  3. 3.25% of 180 =
  4. 4.10% of 30 =
  5. 5.50% of 460 =
  6. 6.15% of 880 =
  7. 7.25% of 800 =
  8. 8.50% of 290 =
  9. 9.5% of 530 =
  10. 10.1% of 750 =
  11. 11.20% of 540 =
  12. 12.5% of 270 =
  13. 13.15% of 130 =
  14. 14.50% of 550 =
  15. 15.10% of 810 =
  16. 16.10% of 890 =
  17. 17.25% of 660 =
  18. 18.1% of 720 =
  19. 19.15% of 640 =
  20. 20.15% of 370 =
  21. 21.25% of 230 =
  22. 22.20% of 610 =
  23. 23.10% of 170 =
  24. 24.10% of 200 =
  25. 25.10% of 790 =
  26. 26.20% of 260 =
  27. 27.10% of 40 =
  28. 28.10% of 880 =
  29. 29.10% of 370 =
  30. 30.25% of 120 =
  31. 31.5% of 840 =
  32. 32.20% of 210 =
  33. 33.20% of 100 =
  34. 34.50% of 330 =
  35. 35.25% of 640 =
  36. 36.10% of 140 =
  37. 37.5% of 830 =
  38. 38.10% of 230 =
  39. 39.50% of 670 =
  40. 40.1% of 800 =

Answer key

  1. 175
  2. 2.9
  3. 45
  4. 3
  5. 230
  6. 132
  7. 200
  8. 145
  9. 26.5
  10. 7.5
  11. 108
  12. 13.5
  13. 19.5
  14. 275
  15. 81
  16. 89
  17. 165
  18. 7.2
  19. 96
  20. 55.5
  21. 57.5
  22. 122
  23. 17
  24. 20
  25. 79
  26. 52
  27. 4
  28. 88
  29. 37
  30. 30
  31. 42
  32. 42
  33. 20
  34. 165
  35. 160
  36. 14
  37. 41.5
  38. 23
  39. 335
  40. 8

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