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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 738 · 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 580 =
  2. 2.10% of 440 =
  3. 3.25% of 700 =
  4. 4.25% of 880 =
  5. 5.25% of 790 =
  6. 6.5% of 120 =
  7. 7.15% of 340 =
  8. 8.5% of 310 =
  9. 9.15% of 270 =
  10. 10.10% of 610 =
  11. 11.50% of 280 =
  12. 12.1% of 110 =
  13. 13.1% of 600 =
  14. 14.10% of 110 =
  15. 15.50% of 360 =
  16. 16.15% of 530 =
  17. 17.25% of 850 =
  18. 18.25% of 170 =
  19. 19.10% of 60 =
  20. 20.5% of 700 =
  21. 21.15% of 560 =
  22. 22.50% of 890 =
  23. 23.25% of 100 =
  24. 24.5% of 130 =
  25. 25.5% of 770 =
  26. 26.25% of 820 =
  27. 27.20% of 480 =
  28. 28.10% of 560 =
  29. 29.20% of 280 =
  30. 30.20% of 820 =
  31. 31.50% of 180 =
  32. 32.15% of 310 =
  33. 33.20% of 440 =
  34. 34.20% of 880 =
  35. 35.10% of 100 =
  36. 36.1% of 260 =
  37. 37.1% of 30 =
  38. 38.20% of 750 =
  39. 39.25% of 890 =
  40. 40.20% of 90 =

Answer key

  1. 290
  2. 44
  3. 175
  4. 220
  5. 197.5
  6. 6
  7. 51
  8. 15.5
  9. 40.5
  10. 61
  11. 140
  12. 1.1
  13. 6
  14. 11
  15. 180
  16. 79.5
  17. 212.5
  18. 42.5
  19. 6
  20. 35
  21. 84
  22. 445
  23. 25
  24. 6.5
  25. 38.5
  26. 205
  27. 96
  28. 56
  29. 56
  30. 164
  31. 90
  32. 46.5
  33. 88
  34. 176
  35. 10
  36. 2.6
  37. 0.3
  38. 150
  39. 222.5
  40. 18

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