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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 975 · 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 230 =
  2. 2.50% of 240 =
  3. 3.15% of 760 =
  4. 4.20% of 770 =
  5. 5.1% of 500 =
  6. 6.20% of 460 =
  7. 7.1% of 90 =
  8. 8.20% of 830 =
  9. 9.10% of 710 =
  10. 10.15% of 130 =
  11. 11.10% of 500 =
  12. 12.5% of 530 =
  13. 13.5% of 80 =
  14. 14.25% of 670 =
  15. 15.25% of 820 =
  16. 16.20% of 350 =
  17. 17.5% of 450 =
  18. 18.15% of 710 =
  19. 19.50% of 230 =
  20. 20.20% of 510 =
  21. 21.5% of 200 =
  22. 22.10% of 820 =
  23. 23.50% of 370 =
  24. 24.5% of 860 =
  25. 25.25% of 740 =
  26. 26.5% of 60 =
  27. 27.10% of 710 =
  28. 28.50% of 180 =
  29. 29.10% of 60 =
  30. 30.10% of 290 =
  31. 31.1% of 90 =
  32. 32.50% of 610 =
  33. 33.20% of 440 =
  34. 34.50% of 850 =
  35. 35.1% of 570 =
  36. 36.1% of 70 =
  37. 37.15% of 50 =
  38. 38.10% of 590 =
  39. 39.5% of 240 =
  40. 40.1% of 260 =

Answer key

  1. 34.5
  2. 120
  3. 114
  4. 154
  5. 5
  6. 92
  7. 0.9
  8. 166
  9. 71
  10. 19.5
  11. 50
  12. 26.5
  13. 4
  14. 167.5
  15. 205
  16. 70
  17. 22.5
  18. 106.5
  19. 115
  20. 102
  21. 10
  22. 82
  23. 185
  24. 43
  25. 185
  26. 3
  27. 71
  28. 90
  29. 6
  30. 29
  31. 0.9
  32. 305
  33. 88
  34. 425
  35. 5.7
  36. 0.7
  37. 7.5
  38. 59
  39. 12
  40. 2.6

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