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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 934 · 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. 1.25% of 840 =
  2. 2.50% of 890 =
  3. 3.25% of 870 =
  4. 4.1% of 350 =
  5. 5.5% of 450 =
  6. 6.50% of 670 =
  7. 7.1% of 170 =
  8. 8.10% of 330 =
  9. 9.10% of 780 =
  10. 10.1% of 750 =
  11. 11.10% of 140 =
  12. 12.5% of 850 =
  13. 13.15% of 480 =
  14. 14.20% of 590 =
  15. 15.25% of 240 =
  16. 16.1% of 710 =
  17. 17.25% of 280 =
  18. 18.25% of 560 =
  19. 19.15% of 770 =
  20. 20.5% of 30 =
  21. 21.50% of 490 =
  22. 22.25% of 340 =
  23. 23.15% of 90 =
  24. 24.50% of 100 =
  25. 25.25% of 20 =
  26. 26.1% of 100 =
  27. 27.10% of 620 =
  28. 28.15% of 220 =
  29. 29.1% of 620 =
  30. 30.15% of 700 =
  31. 31.10% of 460 =
  32. 32.25% of 30 =
  33. 33.15% of 530 =
  34. 34.15% of 500 =
  35. 35.50% of 320 =
  36. 36.1% of 540 =
  37. 37.1% of 540 =
  38. 38.15% of 450 =
  39. 39.20% of 20 =
  40. 40.5% of 750 =

Answer key

  1. 210
  2. 445
  3. 217.5
  4. 3.5
  5. 22.5
  6. 335
  7. 1.7
  8. 33
  9. 78
  10. 7.5
  11. 14
  12. 42.5
  13. 72
  14. 118
  15. 60
  16. 7.1
  17. 70
  18. 140
  19. 115.5
  20. 1.5
  21. 245
  22. 85
  23. 13.5
  24. 50
  25. 5
  26. 1
  27. 62
  28. 33
  29. 6.2
  30. 105
  31. 46
  32. 7.5
  33. 79.5
  34. 75
  35. 160
  36. 5.4
  37. 5.4
  38. 67.5
  39. 4
  40. 37.5

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