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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 488 · 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. 1.1% of 260 =
  2. 2.50% of 90 =
  3. 3.15% of 570 =
  4. 4.1% of 260 =
  5. 5.20% of 460 =
  6. 6.1% of 750 =
  7. 7.20% of 210 =
  8. 8.15% of 120 =
  9. 9.1% of 710 =
  10. 10.25% of 690 =
  11. 11.20% of 790 =
  12. 12.15% of 540 =
  13. 13.5% of 650 =
  14. 14.20% of 20 =
  15. 15.20% of 90 =
  16. 16.10% of 830 =
  17. 17.5% of 270 =
  18. 18.5% of 130 =
  19. 19.10% of 290 =
  20. 20.10% of 190 =
  21. 21.5% of 420 =
  22. 22.25% of 690 =
  23. 23.20% of 360 =
  24. 24.10% of 170 =
  25. 25.15% of 70 =
  26. 26.5% of 90 =
  27. 27.20% of 740 =
  28. 28.50% of 330 =
  29. 29.5% of 250 =
  30. 30.5% of 250 =
  31. 31.25% of 40 =
  32. 32.25% of 300 =
  33. 33.10% of 380 =
  34. 34.5% of 810 =
  35. 35.10% of 160 =
  36. 36.50% of 720 =
  37. 37.25% of 500 =
  38. 38.10% of 300 =
  39. 39.5% of 120 =
  40. 40.5% of 500 =

Answer key

  1. 2.6
  2. 45
  3. 85.5
  4. 2.6
  5. 92
  6. 7.5
  7. 42
  8. 18
  9. 7.1
  10. 172.5
  11. 158
  12. 81
  13. 32.5
  14. 4
  15. 18
  16. 83
  17. 13.5
  18. 6.5
  19. 29
  20. 19
  21. 21
  22. 172.5
  23. 72
  24. 17
  25. 10.5
  26. 4.5
  27. 148
  28. 165
  29. 12.5
  30. 12.5
  31. 10
  32. 75
  33. 38
  34. 40.5
  35. 16
  36. 360
  37. 125
  38. 30
  39. 6
  40. 25

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