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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 465 · 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 630 =
  2. 2.10% of 740 =
  3. 3.10% of 380 =
  4. 4.1% of 480 =
  5. 5.15% of 450 =
  6. 6.5% of 700 =
  7. 7.20% of 230 =
  8. 8.5% of 130 =
  9. 9.1% of 220 =
  10. 10.50% of 410 =
  11. 11.1% of 430 =
  12. 12.20% of 590 =
  13. 13.5% of 280 =
  14. 14.50% of 710 =
  15. 15.50% of 520 =
  16. 16.5% of 520 =
  17. 17.5% of 220 =
  18. 18.20% of 260 =
  19. 19.50% of 180 =
  20. 20.50% of 300 =
  21. 21.25% of 20 =
  22. 22.25% of 770 =
  23. 23.15% of 220 =
  24. 24.5% of 30 =
  25. 25.5% of 680 =
  26. 26.20% of 230 =
  27. 27.20% of 640 =
  28. 28.5% of 660 =
  29. 29.25% of 170 =
  30. 30.20% of 570 =
  31. 31.5% of 490 =
  32. 32.15% of 880 =
  33. 33.1% of 220 =
  34. 34.10% of 310 =
  35. 35.1% of 650 =
  36. 36.20% of 600 =
  37. 37.10% of 50 =
  38. 38.50% of 70 =
  39. 39.25% of 60 =
  40. 40.25% of 580 =

Answer key

  1. 94.5
  2. 74
  3. 38
  4. 4.8
  5. 67.5
  6. 35
  7. 46
  8. 6.5
  9. 2.2
  10. 205
  11. 4.3
  12. 118
  13. 14
  14. 355
  15. 260
  16. 26
  17. 11
  18. 52
  19. 90
  20. 150
  21. 5
  22. 192.5
  23. 33
  24. 1.5
  25. 34
  26. 46
  27. 128
  28. 33
  29. 42.5
  30. 114
  31. 24.5
  32. 132
  33. 2.2
  34. 31
  35. 6.5
  36. 120
  37. 5
  38. 35
  39. 15
  40. 145

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