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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 796 · 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 670 =
  2. 2.10% of 430 =
  3. 3.5% of 720 =
  4. 4.50% of 370 =
  5. 5.25% of 700 =
  6. 6.50% of 860 =
  7. 7.15% of 310 =
  8. 8.5% of 520 =
  9. 9.15% of 880 =
  10. 10.10% of 770 =
  11. 11.50% of 390 =
  12. 12.1% of 580 =
  13. 13.20% of 620 =
  14. 14.5% of 310 =
  15. 15.10% of 240 =
  16. 16.15% of 570 =
  17. 17.25% of 160 =
  18. 18.5% of 180 =
  19. 19.50% of 200 =
  20. 20.5% of 660 =
  21. 21.20% of 490 =
  22. 22.25% of 80 =
  23. 23.1% of 560 =
  24. 24.1% of 220 =
  25. 25.20% of 130 =
  26. 26.20% of 880 =
  27. 27.15% of 790 =
  28. 28.1% of 20 =
  29. 29.1% of 870 =
  30. 30.10% of 780 =
  31. 31.1% of 540 =
  32. 32.25% of 490 =
  33. 33.1% of 580 =
  34. 34.5% of 670 =
  35. 35.50% of 390 =
  36. 36.50% of 320 =
  37. 37.50% of 240 =
  38. 38.5% of 320 =
  39. 39.25% of 130 =
  40. 40.50% of 450 =

Answer key

  1. 100.5
  2. 43
  3. 36
  4. 185
  5. 175
  6. 430
  7. 46.5
  8. 26
  9. 132
  10. 77
  11. 195
  12. 5.8
  13. 124
  14. 15.5
  15. 24
  16. 85.5
  17. 40
  18. 9
  19. 100
  20. 33
  21. 98
  22. 20
  23. 5.6
  24. 2.2
  25. 26
  26. 176
  27. 118.5
  28. 0.2
  29. 8.7
  30. 78
  31. 5.4
  32. 122.5
  33. 5.8
  34. 33.5
  35. 195
  36. 160
  37. 120
  38. 16
  39. 32.5
  40. 225

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