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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 861 · 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. 1.1% of 200 =
  2. 2.15% of 330 =
  3. 3.10% of 290 =
  4. 4.1% of 610 =
  5. 5.50% of 120 =
  6. 6.1% of 210 =
  7. 7.25% of 230 =
  8. 8.20% of 850 =
  9. 9.15% of 220 =
  10. 10.15% of 450 =
  11. 11.50% of 460 =
  12. 12.50% of 680 =
  13. 13.5% of 100 =
  14. 14.5% of 60 =
  15. 15.20% of 390 =
  16. 16.10% of 240 =
  17. 17.20% of 640 =
  18. 18.10% of 750 =
  19. 19.1% of 500 =
  20. 20.15% of 90 =
  21. 21.5% of 780 =
  22. 22.10% of 750 =
  23. 23.5% of 140 =
  24. 24.5% of 70 =
  25. 25.25% of 530 =
  26. 26.10% of 290 =
  27. 27.1% of 550 =
  28. 28.50% of 880 =
  29. 29.1% of 830 =
  30. 30.50% of 370 =
  31. 31.10% of 120 =
  32. 32.25% of 150 =
  33. 33.25% of 590 =
  34. 34.10% of 150 =
  35. 35.20% of 720 =
  36. 36.10% of 40 =
  37. 37.1% of 340 =
  38. 38.25% of 130 =
  39. 39.1% of 730 =
  40. 40.15% of 800 =

Answer key

  1. 2
  2. 49.5
  3. 29
  4. 6.1
  5. 60
  6. 2.1
  7. 57.5
  8. 170
  9. 33
  10. 67.5
  11. 230
  12. 340
  13. 5
  14. 3
  15. 78
  16. 24
  17. 128
  18. 75
  19. 5
  20. 13.5
  21. 39
  22. 75
  23. 7
  24. 3.5
  25. 132.5
  26. 29
  27. 5.5
  28. 440
  29. 8.3
  30. 185
  31. 12
  32. 37.5
  33. 147.5
  34. 15
  35. 144
  36. 4
  37. 3.4
  38. 32.5
  39. 7.3
  40. 120

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