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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 602 · 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 50 =
  2. 2.5% of 100 =
  3. 3.50% of 300 =
  4. 4.1% of 760 =
  5. 5.20% of 190 =
  6. 6.5% of 900 =
  7. 7.10% of 130 =
  8. 8.1% of 140 =
  9. 9.10% of 680 =
  10. 10.10% of 250 =
  11. 11.10% of 350 =
  12. 12.50% of 550 =
  13. 13.1% of 450 =
  14. 14.25% of 630 =
  15. 15.10% of 870 =
  16. 16.1% of 790 =
  17. 17.50% of 750 =
  18. 18.25% of 790 =
  19. 19.20% of 890 =
  20. 20.1% of 310 =
  21. 21.25% of 660 =
  22. 22.25% of 130 =
  23. 23.10% of 800 =
  24. 24.1% of 320 =
  25. 25.5% of 810 =
  26. 26.1% of 400 =
  27. 27.5% of 710 =
  28. 28.20% of 240 =
  29. 29.25% of 460 =
  30. 30.15% of 620 =
  31. 31.5% of 120 =
  32. 32.20% of 410 =
  33. 33.25% of 120 =
  34. 34.25% of 750 =
  35. 35.10% of 190 =
  36. 36.20% of 660 =
  37. 37.25% of 660 =
  38. 38.50% of 530 =
  39. 39.20% of 850 =
  40. 40.10% of 480 =

Answer key

  1. 25
  2. 5
  3. 150
  4. 7.6
  5. 38
  6. 45
  7. 13
  8. 1.4
  9. 68
  10. 25
  11. 35
  12. 275
  13. 4.5
  14. 157.5
  15. 87
  16. 7.9
  17. 375
  18. 197.5
  19. 178
  20. 3.1
  21. 165
  22. 32.5
  23. 80
  24. 3.2
  25. 40.5
  26. 4
  27. 35.5
  28. 48
  29. 115
  30. 93
  31. 6
  32. 82
  33. 30
  34. 187.5
  35. 19
  36. 132
  37. 165
  38. 265
  39. 170
  40. 48

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