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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 354 · 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 860 =
  2. 2.20% of 250 =
  3. 3.25% of 780 =
  4. 4.15% of 200 =
  5. 5.10% of 80 =
  6. 6.15% of 510 =
  7. 7.5% of 200 =
  8. 8.1% of 160 =
  9. 9.50% of 110 =
  10. 10.1% of 760 =
  11. 11.10% of 260 =
  12. 12.5% of 890 =
  13. 13.1% of 30 =
  14. 14.10% of 800 =
  15. 15.50% of 390 =
  16. 16.1% of 610 =
  17. 17.50% of 620 =
  18. 18.1% of 430 =
  19. 19.5% of 810 =
  20. 20.1% of 390 =
  21. 21.10% of 570 =
  22. 22.20% of 40 =
  23. 23.10% of 430 =
  24. 24.15% of 450 =
  25. 25.50% of 570 =
  26. 26.1% of 350 =
  27. 27.25% of 180 =
  28. 28.5% of 420 =
  29. 29.10% of 80 =
  30. 30.10% of 650 =
  31. 31.10% of 550 =
  32. 32.50% of 610 =
  33. 33.1% of 70 =
  34. 34.1% of 30 =
  35. 35.15% of 400 =
  36. 36.10% of 30 =
  37. 37.15% of 240 =
  38. 38.5% of 480 =
  39. 39.1% of 160 =
  40. 40.15% of 870 =

Answer key

  1. 430
  2. 50
  3. 195
  4. 30
  5. 8
  6. 76.5
  7. 10
  8. 1.6
  9. 55
  10. 7.6
  11. 26
  12. 44.5
  13. 0.3
  14. 80
  15. 195
  16. 6.1
  17. 310
  18. 4.3
  19. 40.5
  20. 3.9
  21. 57
  22. 8
  23. 43
  24. 67.5
  25. 285
  26. 3.5
  27. 45
  28. 21
  29. 8
  30. 65
  31. 55
  32. 305
  33. 0.7
  34. 0.3
  35. 60
  36. 3
  37. 36
  38. 24
  39. 1.6
  40. 130.5

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