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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 725 · 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 590 =
  2. 2.10% of 880 =
  3. 3.1% of 800 =
  4. 4.25% of 230 =
  5. 5.20% of 170 =
  6. 6.25% of 390 =
  7. 7.5% of 500 =
  8. 8.50% of 350 =
  9. 9.25% of 20 =
  10. 10.50% of 660 =
  11. 11.15% of 330 =
  12. 12.15% of 20 =
  13. 13.10% of 680 =
  14. 14.20% of 680 =
  15. 15.1% of 860 =
  16. 16.25% of 230 =
  17. 17.10% of 710 =
  18. 18.5% of 100 =
  19. 19.5% of 850 =
  20. 20.10% of 160 =
  21. 21.1% of 780 =
  22. 22.20% of 830 =
  23. 23.15% of 170 =
  24. 24.1% of 40 =
  25. 25.5% of 440 =
  26. 26.10% of 290 =
  27. 27.50% of 100 =
  28. 28.1% of 670 =
  29. 29.20% of 640 =
  30. 30.15% of 100 =
  31. 31.15% of 380 =
  32. 32.25% of 600 =
  33. 33.5% of 420 =
  34. 34.15% of 670 =
  35. 35.5% of 120 =
  36. 36.20% of 840 =
  37. 37.25% of 280 =
  38. 38.1% of 760 =
  39. 39.50% of 670 =
  40. 40.10% of 220 =

Answer key

  1. 88.5
  2. 88
  3. 8
  4. 57.5
  5. 34
  6. 97.5
  7. 25
  8. 175
  9. 5
  10. 330
  11. 49.5
  12. 3
  13. 68
  14. 136
  15. 8.6
  16. 57.5
  17. 71
  18. 5
  19. 42.5
  20. 16
  21. 7.8
  22. 166
  23. 25.5
  24. 0.4
  25. 22
  26. 29
  27. 50
  28. 6.7
  29. 128
  30. 15
  31. 57
  32. 150
  33. 21
  34. 100.5
  35. 6
  36. 168
  37. 70
  38. 7.6
  39. 335
  40. 22

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