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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 862 · 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 160 =
  2. 2.25% of 120 =
  3. 3.1% of 760 =
  4. 4.25% of 860 =
  5. 5.20% of 900 =
  6. 6.5% of 590 =
  7. 7.5% of 230 =
  8. 8.10% of 80 =
  9. 9.50% of 700 =
  10. 10.25% of 570 =
  11. 11.10% of 850 =
  12. 12.50% of 680 =
  13. 13.20% of 720 =
  14. 14.1% of 730 =
  15. 15.20% of 400 =
  16. 16.50% of 450 =
  17. 17.50% of 550 =
  18. 18.1% of 60 =
  19. 19.50% of 610 =
  20. 20.50% of 380 =
  21. 21.10% of 350 =
  22. 22.20% of 680 =
  23. 23.20% of 510 =
  24. 24.1% of 160 =
  25. 25.50% of 840 =
  26. 26.15% of 110 =
  27. 27.5% of 660 =
  28. 28.1% of 530 =
  29. 29.20% of 450 =
  30. 30.50% of 280 =
  31. 31.10% of 780 =
  32. 32.5% of 640 =
  33. 33.15% of 740 =
  34. 34.1% of 540 =
  35. 35.5% of 670 =
  36. 36.25% of 60 =
  37. 37.15% of 780 =
  38. 38.10% of 480 =
  39. 39.5% of 300 =
  40. 40.20% of 30 =

Answer key

  1. 32
  2. 30
  3. 7.6
  4. 215
  5. 180
  6. 29.5
  7. 11.5
  8. 8
  9. 350
  10. 142.5
  11. 85
  12. 340
  13. 144
  14. 7.3
  15. 80
  16. 225
  17. 275
  18. 0.6
  19. 305
  20. 190
  21. 35
  22. 136
  23. 102
  24. 1.6
  25. 420
  26. 16.5
  27. 33
  28. 5.3
  29. 90
  30. 140
  31. 78
  32. 32
  33. 111
  34. 5.4
  35. 33.5
  36. 15
  37. 117
  38. 48
  39. 15
  40. 6

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