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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 473 · 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 360 =
  2. 2.15% of 360 =
  3. 3.25% of 230 =
  4. 4.10% of 550 =
  5. 5.1% of 790 =
  6. 6.1% of 490 =
  7. 7.5% of 390 =
  8. 8.1% of 810 =
  9. 9.10% of 880 =
  10. 10.1% of 150 =
  11. 11.20% of 420 =
  12. 12.25% of 640 =
  13. 13.5% of 690 =
  14. 14.20% of 800 =
  15. 15.25% of 210 =
  16. 16.1% of 610 =
  17. 17.50% of 510 =
  18. 18.50% of 650 =
  19. 19.20% of 660 =
  20. 20.1% of 430 =
  21. 21.50% of 540 =
  22. 22.1% of 900 =
  23. 23.10% of 290 =
  24. 24.15% of 220 =
  25. 25.10% of 880 =
  26. 26.15% of 780 =
  27. 27.1% of 310 =
  28. 28.5% of 160 =
  29. 29.15% of 570 =
  30. 30.50% of 620 =
  31. 31.1% of 590 =
  32. 32.15% of 340 =
  33. 33.15% of 860 =
  34. 34.10% of 220 =
  35. 35.10% of 300 =
  36. 36.15% of 680 =
  37. 37.15% of 640 =
  38. 38.5% of 110 =
  39. 39.50% of 830 =
  40. 40.15% of 620 =

Answer key

  1. 180
  2. 54
  3. 57.5
  4. 55
  5. 7.9
  6. 4.9
  7. 19.5
  8. 8.1
  9. 88
  10. 1.5
  11. 84
  12. 160
  13. 34.5
  14. 160
  15. 52.5
  16. 6.1
  17. 255
  18. 325
  19. 132
  20. 4.3
  21. 270
  22. 9
  23. 29
  24. 33
  25. 88
  26. 117
  27. 3.1
  28. 8
  29. 85.5
  30. 310
  31. 5.9
  32. 51
  33. 129
  34. 22
  35. 30
  36. 102
  37. 96
  38. 5.5
  39. 415
  40. 93

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