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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 125 · 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. 1.50% of 80 =
  2. 2.10% of 570 =
  3. 3.1% of 450 =
  4. 4.10% of 210 =
  5. 5.20% of 620 =
  6. 6.1% of 250 =
  7. 7.20% of 480 =
  8. 8.5% of 30 =
  9. 9.25% of 480 =
  10. 10.1% of 900 =
  11. 11.20% of 50 =
  12. 12.1% of 470 =
  13. 13.1% of 880 =
  14. 14.20% of 670 =
  15. 15.25% of 40 =
  16. 16.15% of 440 =
  17. 17.10% of 70 =
  18. 18.5% of 740 =
  19. 19.20% of 80 =
  20. 20.20% of 760 =
  21. 21.25% of 800 =
  22. 22.1% of 220 =
  23. 23.50% of 570 =
  24. 24.15% of 840 =
  25. 25.5% of 420 =
  26. 26.15% of 690 =
  27. 27.15% of 800 =
  28. 28.10% of 320 =
  29. 29.15% of 560 =
  30. 30.50% of 820 =
  31. 31.50% of 810 =
  32. 32.5% of 330 =
  33. 33.1% of 530 =
  34. 34.50% of 590 =
  35. 35.5% of 140 =
  36. 36.10% of 870 =
  37. 37.15% of 530 =
  38. 38.10% of 240 =
  39. 39.1% of 130 =
  40. 40.1% of 850 =

Answer key

  1. 40
  2. 57
  3. 4.5
  4. 21
  5. 124
  6. 2.5
  7. 96
  8. 1.5
  9. 120
  10. 9
  11. 10
  12. 4.7
  13. 8.8
  14. 134
  15. 10
  16. 66
  17. 7
  18. 37
  19. 16
  20. 152
  21. 200
  22. 2.2
  23. 285
  24. 126
  25. 21
  26. 103.5
  27. 120
  28. 32
  29. 84
  30. 410
  31. 405
  32. 16.5
  33. 5.3
  34. 295
  35. 7
  36. 87
  37. 79.5
  38. 24
  39. 1.3
  40. 8.5

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