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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 92 · 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 210 =
  2. 2.5% of 260 =
  3. 3.1% of 100 =
  4. 4.1% of 180 =
  5. 5.1% of 610 =
  6. 6.25% of 420 =
  7. 7.1% of 890 =
  8. 8.50% of 300 =
  9. 9.20% of 650 =
  10. 10.5% of 620 =
  11. 11.1% of 160 =
  12. 12.25% of 150 =
  13. 13.10% of 480 =
  14. 14.50% of 850 =
  15. 15.10% of 620 =
  16. 16.5% of 770 =
  17. 17.25% of 830 =
  18. 18.5% of 530 =
  19. 19.10% of 340 =
  20. 20.20% of 340 =
  21. 21.20% of 750 =
  22. 22.50% of 860 =
  23. 23.50% of 230 =
  24. 24.15% of 210 =
  25. 25.10% of 400 =
  26. 26.25% of 260 =
  27. 27.5% of 600 =
  28. 28.50% of 640 =
  29. 29.10% of 770 =
  30. 30.5% of 640 =
  31. 31.5% of 450 =
  32. 32.20% of 800 =
  33. 33.5% of 880 =
  34. 34.5% of 590 =
  35. 35.25% of 60 =
  36. 36.15% of 790 =
  37. 37.15% of 280 =
  38. 38.50% of 820 =
  39. 39.50% of 650 =
  40. 40.25% of 440 =

Answer key

  1. 10.5
  2. 13
  3. 1
  4. 1.8
  5. 6.1
  6. 105
  7. 8.9
  8. 150
  9. 130
  10. 31
  11. 1.6
  12. 37.5
  13. 48
  14. 425
  15. 62
  16. 38.5
  17. 207.5
  18. 26.5
  19. 34
  20. 68
  21. 150
  22. 430
  23. 115
  24. 31.5
  25. 40
  26. 65
  27. 30
  28. 320
  29. 77
  30. 32
  31. 22.5
  32. 160
  33. 44
  34. 29.5
  35. 15
  36. 118.5
  37. 42
  38. 410
  39. 325
  40. 110

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