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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 807 · 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. 1.20% of 620 =
  2. 2.25% of 70 =
  3. 3.10% of 450 =
  4. 4.10% of 770 =
  5. 5.20% of 70 =
  6. 6.1% of 750 =
  7. 7.10% of 850 =
  8. 8.50% of 450 =
  9. 9.15% of 470 =
  10. 10.5% of 830 =
  11. 11.5% of 280 =
  12. 12.10% of 260 =
  13. 13.5% of 80 =
  14. 14.10% of 80 =
  15. 15.5% of 340 =
  16. 16.1% of 190 =
  17. 17.25% of 480 =
  18. 18.5% of 190 =
  19. 19.50% of 820 =
  20. 20.50% of 230 =
  21. 21.1% of 650 =
  22. 22.15% of 240 =
  23. 23.5% of 240 =
  24. 24.25% of 540 =
  25. 25.15% of 730 =
  26. 26.25% of 540 =
  27. 27.20% of 490 =
  28. 28.25% of 200 =
  29. 29.15% of 280 =
  30. 30.20% of 780 =
  31. 31.1% of 50 =
  32. 32.25% of 800 =
  33. 33.1% of 240 =
  34. 34.5% of 90 =
  35. 35.20% of 740 =
  36. 36.20% of 550 =
  37. 37.25% of 720 =
  38. 38.1% of 230 =
  39. 39.15% of 740 =
  40. 40.20% of 620 =

Answer key

  1. 124
  2. 17.5
  3. 45
  4. 77
  5. 14
  6. 7.5
  7. 85
  8. 225
  9. 70.5
  10. 41.5
  11. 14
  12. 26
  13. 4
  14. 8
  15. 17
  16. 1.9
  17. 120
  18. 9.5
  19. 410
  20. 115
  21. 6.5
  22. 36
  23. 12
  24. 135
  25. 109.5
  26. 135
  27. 98
  28. 50
  29. 42
  30. 156
  31. 0.5
  32. 200
  33. 2.4
  34. 4.5
  35. 148
  36. 110
  37. 180
  38. 2.3
  39. 111
  40. 124

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