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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 609 · 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 560 =
  2. 2.5% of 500 =
  3. 3.1% of 450 =
  4. 4.5% of 460 =
  5. 5.50% of 880 =
  6. 6.10% of 870 =
  7. 7.25% of 600 =
  8. 8.50% of 210 =
  9. 9.20% of 490 =
  10. 10.25% of 80 =
  11. 11.20% of 310 =
  12. 12.25% of 480 =
  13. 13.5% of 450 =
  14. 14.50% of 560 =
  15. 15.10% of 320 =
  16. 16.25% of 850 =
  17. 17.5% of 360 =
  18. 18.50% of 670 =
  19. 19.50% of 830 =
  20. 20.1% of 390 =
  21. 21.20% of 840 =
  22. 22.1% of 360 =
  23. 23.25% of 600 =
  24. 24.10% of 750 =
  25. 25.15% of 20 =
  26. 26.10% of 540 =
  27. 27.15% of 150 =
  28. 28.10% of 290 =
  29. 29.50% of 140 =
  30. 30.20% of 90 =
  31. 31.25% of 70 =
  32. 32.1% of 330 =
  33. 33.15% of 550 =
  34. 34.25% of 20 =
  35. 35.20% of 250 =
  36. 36.15% of 100 =
  37. 37.20% of 150 =
  38. 38.10% of 830 =
  39. 39.5% of 150 =
  40. 40.20% of 580 =

Answer key

  1. 112
  2. 25
  3. 4.5
  4. 23
  5. 440
  6. 87
  7. 150
  8. 105
  9. 98
  10. 20
  11. 62
  12. 120
  13. 22.5
  14. 280
  15. 32
  16. 212.5
  17. 18
  18. 335
  19. 415
  20. 3.9
  21. 168
  22. 3.6
  23. 150
  24. 75
  25. 3
  26. 54
  27. 22.5
  28. 29
  29. 70
  30. 18
  31. 17.5
  32. 3.3
  33. 82.5
  34. 5
  35. 50
  36. 15
  37. 30
  38. 83
  39. 7.5
  40. 116

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