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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 914 · 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 590 =
  2. 2.10% of 180 =
  3. 3.25% of 630 =
  4. 4.25% of 20 =
  5. 5.5% of 380 =
  6. 6.10% of 90 =
  7. 7.25% of 790 =
  8. 8.50% of 230 =
  9. 9.5% of 500 =
  10. 10.1% of 470 =
  11. 11.1% of 720 =
  12. 12.15% of 690 =
  13. 13.15% of 520 =
  14. 14.50% of 580 =
  15. 15.15% of 480 =
  16. 16.1% of 760 =
  17. 17.5% of 900 =
  18. 18.5% of 40 =
  19. 19.5% of 600 =
  20. 20.5% of 50 =
  21. 21.50% of 570 =
  22. 22.25% of 720 =
  23. 23.10% of 810 =
  24. 24.50% of 840 =
  25. 25.10% of 540 =
  26. 26.1% of 620 =
  27. 27.15% of 740 =
  28. 28.15% of 160 =
  29. 29.5% of 870 =
  30. 30.50% of 610 =
  31. 31.50% of 850 =
  32. 32.1% of 830 =
  33. 33.10% of 250 =
  34. 34.25% of 120 =
  35. 35.25% of 680 =
  36. 36.1% of 290 =
  37. 37.50% of 50 =
  38. 38.5% of 100 =
  39. 39.20% of 350 =
  40. 40.15% of 170 =

Answer key

  1. 88.5
  2. 18
  3. 157.5
  4. 5
  5. 19
  6. 9
  7. 197.5
  8. 115
  9. 25
  10. 4.7
  11. 7.2
  12. 103.5
  13. 78
  14. 290
  15. 72
  16. 7.6
  17. 45
  18. 2
  19. 30
  20. 2.5
  21. 285
  22. 180
  23. 81
  24. 420
  25. 54
  26. 6.2
  27. 111
  28. 24
  29. 43.5
  30. 305
  31. 425
  32. 8.3
  33. 25
  34. 30
  35. 170
  36. 2.9
  37. 25
  38. 5
  39. 70
  40. 25.5

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