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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 943 · 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. 1.50% of 650 =
  2. 2.1% of 200 =
  3. 3.25% of 760 =
  4. 4.25% of 480 =
  5. 5.1% of 200 =
  6. 6.25% of 530 =
  7. 7.5% of 660 =
  8. 8.50% of 520 =
  9. 9.50% of 720 =
  10. 10.50% of 690 =
  11. 11.15% of 170 =
  12. 12.1% of 740 =
  13. 13.20% of 210 =
  14. 14.10% of 130 =
  15. 15.5% of 110 =
  16. 16.10% of 280 =
  17. 17.1% of 100 =
  18. 18.50% of 50 =
  19. 19.20% of 190 =
  20. 20.10% of 420 =
  21. 21.10% of 630 =
  22. 22.10% of 380 =
  23. 23.5% of 140 =
  24. 24.15% of 810 =
  25. 25.15% of 160 =
  26. 26.5% of 720 =
  27. 27.20% of 100 =
  28. 28.25% of 300 =
  29. 29.5% of 270 =
  30. 30.5% of 700 =
  31. 31.50% of 180 =
  32. 32.25% of 20 =
  33. 33.1% of 120 =
  34. 34.20% of 140 =
  35. 35.10% of 600 =
  36. 36.15% of 590 =
  37. 37.20% of 450 =
  38. 38.50% of 600 =
  39. 39.15% of 140 =
  40. 40.25% of 200 =

Answer key

  1. 325
  2. 2
  3. 190
  4. 120
  5. 2
  6. 132.5
  7. 33
  8. 260
  9. 360
  10. 345
  11. 25.5
  12. 7.4
  13. 42
  14. 13
  15. 5.5
  16. 28
  17. 1
  18. 25
  19. 38
  20. 42
  21. 63
  22. 38
  23. 7
  24. 121.5
  25. 24
  26. 36
  27. 20
  28. 75
  29. 13.5
  30. 35
  31. 90
  32. 5
  33. 1.2
  34. 28
  35. 60
  36. 88.5
  37. 90
  38. 300
  39. 21
  40. 50

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