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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 917 · 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 800 =
  2. 2.50% of 350 =
  3. 3.10% of 590 =
  4. 4.10% of 550 =
  5. 5.10% of 840 =
  6. 6.5% of 390 =
  7. 7.20% of 770 =
  8. 8.20% of 350 =
  9. 9.20% of 120 =
  10. 10.50% of 360 =
  11. 11.10% of 250 =
  12. 12.10% of 80 =
  13. 13.25% of 30 =
  14. 14.20% of 710 =
  15. 15.15% of 170 =
  16. 16.50% of 720 =
  17. 17.25% of 690 =
  18. 18.1% of 520 =
  19. 19.20% of 780 =
  20. 20.15% of 710 =
  21. 21.1% of 690 =
  22. 22.1% of 310 =
  23. 23.10% of 890 =
  24. 24.5% of 540 =
  25. 25.25% of 350 =
  26. 26.15% of 520 =
  27. 27.10% of 220 =
  28. 28.50% of 590 =
  29. 29.20% of 720 =
  30. 30.25% of 530 =
  31. 31.5% of 430 =
  32. 32.20% of 50 =
  33. 33.50% of 680 =
  34. 34.10% of 40 =
  35. 35.20% of 100 =
  36. 36.5% of 210 =
  37. 37.50% of 140 =
  38. 38.1% of 250 =
  39. 39.20% of 530 =
  40. 40.50% of 250 =

Answer key

  1. 160
  2. 175
  3. 59
  4. 55
  5. 84
  6. 19.5
  7. 154
  8. 70
  9. 24
  10. 180
  11. 25
  12. 8
  13. 7.5
  14. 142
  15. 25.5
  16. 360
  17. 172.5
  18. 5.2
  19. 156
  20. 106.5
  21. 6.9
  22. 3.1
  23. 89
  24. 27
  25. 87.5
  26. 78
  27. 22
  28. 295
  29. 144
  30. 132.5
  31. 21.5
  32. 10
  33. 340
  34. 4
  35. 20
  36. 10.5
  37. 70
  38. 2.5
  39. 106
  40. 125

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