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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 798 · 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. 1.5% of 40 =
  2. 2.20% of 730 =
  3. 3.1% of 590 =
  4. 4.20% of 440 =
  5. 5.50% of 880 =
  6. 6.5% of 330 =
  7. 7.10% of 440 =
  8. 8.20% of 820 =
  9. 9.5% of 90 =
  10. 10.5% of 900 =
  11. 11.15% of 720 =
  12. 12.10% of 40 =
  13. 13.1% of 900 =
  14. 14.25% of 450 =
  15. 15.5% of 640 =
  16. 16.5% of 160 =
  17. 17.25% of 340 =
  18. 18.10% of 110 =
  19. 19.10% of 40 =
  20. 20.50% of 100 =
  21. 21.20% of 160 =
  22. 22.50% of 640 =
  23. 23.15% of 500 =
  24. 24.1% of 800 =
  25. 25.1% of 890 =
  26. 26.5% of 220 =
  27. 27.5% of 250 =
  28. 28.5% of 560 =
  29. 29.25% of 560 =
  30. 30.15% of 670 =
  31. 31.50% of 120 =
  32. 32.20% of 590 =
  33. 33.10% of 670 =
  34. 34.50% of 530 =
  35. 35.50% of 160 =
  36. 36.25% of 750 =
  37. 37.1% of 380 =
  38. 38.10% of 30 =
  39. 39.5% of 400 =
  40. 40.50% of 100 =

Answer key

  1. 2
  2. 146
  3. 5.9
  4. 88
  5. 440
  6. 16.5
  7. 44
  8. 164
  9. 4.5
  10. 45
  11. 108
  12. 4
  13. 9
  14. 112.5
  15. 32
  16. 8
  17. 85
  18. 11
  19. 4
  20. 50
  21. 32
  22. 320
  23. 75
  24. 8
  25. 8.9
  26. 11
  27. 12.5
  28. 28
  29. 140
  30. 100.5
  31. 60
  32. 118
  33. 67
  34. 265
  35. 80
  36. 187.5
  37. 3.8
  38. 3
  39. 20
  40. 50

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