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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 758 · 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 140 =
  2. 2.5% of 70 =
  3. 3.20% of 120 =
  4. 4.10% of 210 =
  5. 5.5% of 380 =
  6. 6.10% of 420 =
  7. 7.25% of 530 =
  8. 8.15% of 80 =
  9. 9.15% of 310 =
  10. 10.20% of 610 =
  11. 11.10% of 370 =
  12. 12.25% of 800 =
  13. 13.10% of 60 =
  14. 14.50% of 540 =
  15. 15.1% of 490 =
  16. 16.10% of 380 =
  17. 17.25% of 500 =
  18. 18.25% of 640 =
  19. 19.10% of 150 =
  20. 20.10% of 770 =
  21. 21.1% of 800 =
  22. 22.10% of 100 =
  23. 23.5% of 860 =
  24. 24.50% of 540 =
  25. 25.10% of 810 =
  26. 26.25% of 20 =
  27. 27.15% of 610 =
  28. 28.5% of 620 =
  29. 29.15% of 770 =
  30. 30.15% of 320 =
  31. 31.10% of 400 =
  32. 32.10% of 70 =
  33. 33.50% of 420 =
  34. 34.10% of 590 =
  35. 35.15% of 170 =
  36. 36.25% of 480 =
  37. 37.10% of 620 =
  38. 38.25% of 240 =
  39. 39.15% of 630 =
  40. 40.15% of 300 =

Answer key

  1. 70
  2. 3.5
  3. 24
  4. 21
  5. 19
  6. 42
  7. 132.5
  8. 12
  9. 46.5
  10. 122
  11. 37
  12. 200
  13. 6
  14. 270
  15. 4.9
  16. 38
  17. 125
  18. 160
  19. 15
  20. 77
  21. 8
  22. 10
  23. 43
  24. 270
  25. 81
  26. 5
  27. 91.5
  28. 31
  29. 115.5
  30. 48
  31. 40
  32. 7
  33. 210
  34. 59
  35. 25.5
  36. 120
  37. 62
  38. 60
  39. 94.5
  40. 45

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