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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 254 · 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. 1.15% of 60 =
  2. 2.15% of 140 =
  3. 3.5% of 270 =
  4. 4.5% of 760 =
  5. 5.1% of 250 =
  6. 6.10% of 600 =
  7. 7.1% of 620 =
  8. 8.20% of 880 =
  9. 9.5% of 490 =
  10. 10.25% of 870 =
  11. 11.50% of 810 =
  12. 12.10% of 640 =
  13. 13.20% of 690 =
  14. 14.15% of 350 =
  15. 15.20% of 500 =
  16. 16.10% of 740 =
  17. 17.50% of 590 =
  18. 18.50% of 150 =
  19. 19.25% of 610 =
  20. 20.5% of 830 =
  21. 21.1% of 290 =
  22. 22.50% of 430 =
  23. 23.25% of 540 =
  24. 24.25% of 160 =
  25. 25.1% of 600 =
  26. 26.10% of 840 =
  27. 27.1% of 500 =
  28. 28.20% of 880 =
  29. 29.1% of 780 =
  30. 30.10% of 820 =
  31. 31.1% of 370 =
  32. 32.5% of 180 =
  33. 33.15% of 250 =
  34. 34.20% of 130 =
  35. 35.10% of 600 =
  36. 36.10% of 170 =
  37. 37.20% of 30 =
  38. 38.25% of 380 =
  39. 39.25% of 200 =
  40. 40.1% of 300 =

Answer key

  1. 9
  2. 21
  3. 13.5
  4. 38
  5. 2.5
  6. 60
  7. 6.2
  8. 176
  9. 24.5
  10. 217.5
  11. 405
  12. 64
  13. 138
  14. 52.5
  15. 100
  16. 74
  17. 295
  18. 75
  19. 152.5
  20. 41.5
  21. 2.9
  22. 215
  23. 135
  24. 40
  25. 6
  26. 84
  27. 5
  28. 176
  29. 7.8
  30. 82
  31. 3.7
  32. 9
  33. 37.5
  34. 26
  35. 60
  36. 17
  37. 6
  38. 95
  39. 50
  40. 3

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