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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 846 · 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. 1.15% of 200 =
  2. 2.20% of 810 =
  3. 3.20% of 510 =
  4. 4.1% of 190 =
  5. 5.10% of 160 =
  6. 6.5% of 200 =
  7. 7.5% of 630 =
  8. 8.1% of 540 =
  9. 9.1% of 890 =
  10. 10.20% of 160 =
  11. 11.10% of 430 =
  12. 12.5% of 520 =
  13. 13.10% of 40 =
  14. 14.20% of 480 =
  15. 15.25% of 840 =
  16. 16.10% of 360 =
  17. 17.20% of 30 =
  18. 18.5% of 330 =
  19. 19.1% of 60 =
  20. 20.5% of 880 =
  21. 21.5% of 30 =
  22. 22.10% of 250 =
  23. 23.1% of 620 =
  24. 24.25% of 200 =
  25. 25.50% of 210 =
  26. 26.20% of 220 =
  27. 27.1% of 40 =
  28. 28.10% of 850 =
  29. 29.15% of 890 =
  30. 30.20% of 20 =
  31. 31.5% of 840 =
  32. 32.10% of 410 =
  33. 33.25% of 140 =
  34. 34.25% of 820 =
  35. 35.20% of 550 =
  36. 36.15% of 770 =
  37. 37.15% of 60 =
  38. 38.5% of 470 =
  39. 39.10% of 690 =
  40. 40.50% of 640 =

Answer key

  1. 30
  2. 162
  3. 102
  4. 1.9
  5. 16
  6. 10
  7. 31.5
  8. 5.4
  9. 8.9
  10. 32
  11. 43
  12. 26
  13. 4
  14. 96
  15. 210
  16. 36
  17. 6
  18. 16.5
  19. 0.6
  20. 44
  21. 1.5
  22. 25
  23. 6.2
  24. 50
  25. 105
  26. 44
  27. 0.4
  28. 85
  29. 133.5
  30. 4
  31. 42
  32. 41
  33. 35
  34. 205
  35. 110
  36. 115.5
  37. 9
  38. 23.5
  39. 69
  40. 320

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