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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 33 · 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. 1.10% of 760 =
  2. 2.20% of 680 =
  3. 3.10% of 60 =
  4. 4.5% of 310 =
  5. 5.10% of 390 =
  6. 6.15% of 640 =
  7. 7.15% of 270 =
  8. 8.1% of 530 =
  9. 9.5% of 350 =
  10. 10.25% of 840 =
  11. 11.5% of 280 =
  12. 12.1% of 420 =
  13. 13.5% of 800 =
  14. 14.50% of 330 =
  15. 15.25% of 510 =
  16. 16.5% of 650 =
  17. 17.25% of 230 =
  18. 18.50% of 610 =
  19. 19.15% of 580 =
  20. 20.1% of 840 =
  21. 21.20% of 350 =
  22. 22.20% of 690 =
  23. 23.20% of 630 =
  24. 24.10% of 350 =
  25. 25.1% of 650 =
  26. 26.5% of 40 =
  27. 27.1% of 120 =
  28. 28.1% of 270 =
  29. 29.5% of 610 =
  30. 30.50% of 750 =
  31. 31.1% of 880 =
  32. 32.10% of 500 =
  33. 33.20% of 300 =
  34. 34.1% of 80 =
  35. 35.5% of 150 =
  36. 36.25% of 20 =
  37. 37.15% of 700 =
  38. 38.10% of 850 =
  39. 39.20% of 750 =
  40. 40.5% of 810 =

Answer key

  1. 76
  2. 136
  3. 6
  4. 15.5
  5. 39
  6. 96
  7. 40.5
  8. 5.3
  9. 17.5
  10. 210
  11. 14
  12. 4.2
  13. 40
  14. 165
  15. 127.5
  16. 32.5
  17. 57.5
  18. 305
  19. 87
  20. 8.4
  21. 70
  22. 138
  23. 126
  24. 35
  25. 6.5
  26. 2
  27. 1.2
  28. 2.7
  29. 30.5
  30. 375
  31. 8.8
  32. 50
  33. 60
  34. 0.8
  35. 7.5
  36. 5
  37. 105
  38. 85
  39. 150
  40. 40.5

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