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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 695 · 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. 1.10% of 590 =
  2. 2.50% of 720 =
  3. 3.20% of 370 =
  4. 4.25% of 410 =
  5. 5.20% of 270 =
  6. 6.50% of 480 =
  7. 7.25% of 80 =
  8. 8.25% of 50 =
  9. 9.25% of 580 =
  10. 10.10% of 580 =
  11. 11.1% of 60 =
  12. 12.1% of 690 =
  13. 13.5% of 680 =
  14. 14.1% of 680 =
  15. 15.10% of 340 =
  16. 16.25% of 70 =
  17. 17.5% of 410 =
  18. 18.10% of 410 =
  19. 19.20% of 800 =
  20. 20.20% of 750 =
  21. 21.10% of 690 =
  22. 22.10% of 380 =
  23. 23.15% of 130 =
  24. 24.10% of 720 =
  25. 25.5% of 250 =
  26. 26.25% of 700 =
  27. 27.50% of 20 =
  28. 28.15% of 880 =
  29. 29.10% of 230 =
  30. 30.50% of 470 =
  31. 31.20% of 210 =
  32. 32.10% of 220 =
  33. 33.10% of 20 =
  34. 34.15% of 140 =
  35. 35.10% of 510 =
  36. 36.20% of 640 =
  37. 37.15% of 530 =
  38. 38.5% of 50 =
  39. 39.5% of 80 =
  40. 40.5% of 440 =

Answer key

  1. 59
  2. 360
  3. 74
  4. 102.5
  5. 54
  6. 240
  7. 20
  8. 12.5
  9. 145
  10. 58
  11. 0.6
  12. 6.9
  13. 34
  14. 6.8
  15. 34
  16. 17.5
  17. 20.5
  18. 41
  19. 160
  20. 150
  21. 69
  22. 38
  23. 19.5
  24. 72
  25. 12.5
  26. 175
  27. 10
  28. 132
  29. 23
  30. 235
  31. 42
  32. 22
  33. 2
  34. 21
  35. 51
  36. 128
  37. 79.5
  38. 2.5
  39. 4
  40. 22

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