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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 6 · 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 740 =
  2. 2.5% of 400 =
  3. 3.5% of 210 =
  4. 4.25% of 150 =
  5. 5.1% of 810 =
  6. 6.1% of 690 =
  7. 7.20% of 800 =
  8. 8.20% of 820 =
  9. 9.1% of 150 =
  10. 10.10% of 350 =
  11. 11.10% of 690 =
  12. 12.1% of 440 =
  13. 13.15% of 830 =
  14. 14.50% of 880 =
  15. 15.25% of 390 =
  16. 16.25% of 180 =
  17. 17.50% of 150 =
  18. 18.25% of 80 =
  19. 19.25% of 230 =
  20. 20.10% of 350 =
  21. 21.5% of 750 =
  22. 22.20% of 740 =
  23. 23.15% of 710 =
  24. 24.15% of 730 =
  25. 25.1% of 860 =
  26. 26.10% of 200 =
  27. 27.20% of 620 =
  28. 28.50% of 470 =
  29. 29.1% of 190 =
  30. 30.20% of 750 =
  31. 31.25% of 80 =
  32. 32.10% of 70 =
  33. 33.10% of 180 =
  34. 34.5% of 130 =
  35. 35.25% of 170 =
  36. 36.20% of 140 =
  37. 37.15% of 330 =
  38. 38.20% of 670 =
  39. 39.5% of 230 =
  40. 40.15% of 470 =

Answer key

  1. 185
  2. 20
  3. 10.5
  4. 37.5
  5. 8.1
  6. 6.9
  7. 160
  8. 164
  9. 1.5
  10. 35
  11. 69
  12. 4.4
  13. 124.5
  14. 440
  15. 97.5
  16. 45
  17. 75
  18. 20
  19. 57.5
  20. 35
  21. 37.5
  22. 148
  23. 106.5
  24. 109.5
  25. 8.6
  26. 20
  27. 124
  28. 235
  29. 1.9
  30. 150
  31. 20
  32. 7
  33. 18
  34. 6.5
  35. 42.5
  36. 28
  37. 49.5
  38. 134
  39. 11.5
  40. 70.5

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