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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 881 · 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 620 =
  2. 2.5% of 550 =
  3. 3.20% of 30 =
  4. 4.50% of 750 =
  5. 5.25% of 430 =
  6. 6.50% of 260 =
  7. 7.5% of 530 =
  8. 8.20% of 240 =
  9. 9.15% of 880 =
  10. 10.15% of 330 =
  11. 11.20% of 660 =
  12. 12.20% of 840 =
  13. 13.5% of 710 =
  14. 14.10% of 500 =
  15. 15.10% of 730 =
  16. 16.10% of 550 =
  17. 17.1% of 240 =
  18. 18.20% of 60 =
  19. 19.10% of 360 =
  20. 20.15% of 730 =
  21. 21.1% of 660 =
  22. 22.15% of 900 =
  23. 23.1% of 570 =
  24. 24.15% of 90 =
  25. 25.5% of 310 =
  26. 26.1% of 880 =
  27. 27.1% of 660 =
  28. 28.25% of 60 =
  29. 29.20% of 510 =
  30. 30.25% of 300 =
  31. 31.5% of 340 =
  32. 32.1% of 360 =
  33. 33.10% of 590 =
  34. 34.10% of 770 =
  35. 35.10% of 280 =
  36. 36.50% of 740 =
  37. 37.20% of 670 =
  38. 38.50% of 310 =
  39. 39.5% of 260 =
  40. 40.1% of 680 =

Answer key

  1. 93
  2. 27.5
  3. 6
  4. 375
  5. 107.5
  6. 130
  7. 26.5
  8. 48
  9. 132
  10. 49.5
  11. 132
  12. 168
  13. 35.5
  14. 50
  15. 73
  16. 55
  17. 2.4
  18. 12
  19. 36
  20. 109.5
  21. 6.6
  22. 135
  23. 5.7
  24. 13.5
  25. 15.5
  26. 8.8
  27. 6.6
  28. 15
  29. 102
  30. 75
  31. 17
  32. 3.6
  33. 59
  34. 77
  35. 28
  36. 370
  37. 134
  38. 155
  39. 13
  40. 6.8

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