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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 897 · 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 250 =
  2. 2.20% of 490 =
  3. 3.5% of 190 =
  4. 4.20% of 830 =
  5. 5.10% of 210 =
  6. 6.20% of 590 =
  7. 7.10% of 480 =
  8. 8.5% of 50 =
  9. 9.20% of 490 =
  10. 10.10% of 360 =
  11. 11.5% of 760 =
  12. 12.5% of 290 =
  13. 13.15% of 210 =
  14. 14.25% of 480 =
  15. 15.20% of 200 =
  16. 16.25% of 730 =
  17. 17.1% of 420 =
  18. 18.15% of 190 =
  19. 19.1% of 70 =
  20. 20.10% of 790 =
  21. 21.10% of 840 =
  22. 22.10% of 170 =
  23. 23.20% of 280 =
  24. 24.5% of 550 =
  25. 25.20% of 240 =
  26. 26.10% of 600 =
  27. 27.5% of 560 =
  28. 28.10% of 640 =
  29. 29.15% of 800 =
  30. 30.50% of 820 =
  31. 31.25% of 370 =
  32. 32.1% of 80 =
  33. 33.5% of 670 =
  34. 34.1% of 900 =
  35. 35.1% of 720 =
  36. 36.5% of 190 =
  37. 37.50% of 730 =
  38. 38.50% of 310 =
  39. 39.20% of 550 =
  40. 40.10% of 100 =

Answer key

  1. 62.5
  2. 98
  3. 9.5
  4. 166
  5. 21
  6. 118
  7. 48
  8. 2.5
  9. 98
  10. 36
  11. 38
  12. 14.5
  13. 31.5
  14. 120
  15. 40
  16. 182.5
  17. 4.2
  18. 28.5
  19. 0.7
  20. 79
  21. 84
  22. 17
  23. 56
  24. 27.5
  25. 48
  26. 60
  27. 28
  28. 64
  29. 120
  30. 410
  31. 92.5
  32. 0.8
  33. 33.5
  34. 9
  35. 7.2
  36. 9.5
  37. 365
  38. 155
  39. 110
  40. 10

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