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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 790 · 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 620 =
  2. 2.1% of 620 =
  3. 3.20% of 880 =
  4. 4.15% of 190 =
  5. 5.1% of 300 =
  6. 6.1% of 580 =
  7. 7.5% of 320 =
  8. 8.50% of 660 =
  9. 9.1% of 760 =
  10. 10.15% of 150 =
  11. 11.50% of 680 =
  12. 12.1% of 840 =
  13. 13.5% of 740 =
  14. 14.10% of 20 =
  15. 15.5% of 240 =
  16. 16.25% of 30 =
  17. 17.5% of 170 =
  18. 18.15% of 390 =
  19. 19.25% of 180 =
  20. 20.15% of 120 =
  21. 21.5% of 510 =
  22. 22.15% of 890 =
  23. 23.1% of 380 =
  24. 24.1% of 570 =
  25. 25.20% of 480 =
  26. 26.20% of 730 =
  27. 27.10% of 230 =
  28. 28.15% of 770 =
  29. 29.5% of 150 =
  30. 30.50% of 490 =
  31. 31.5% of 480 =
  32. 32.1% of 600 =
  33. 33.5% of 870 =
  34. 34.20% of 50 =
  35. 35.5% of 720 =
  36. 36.50% of 260 =
  37. 37.1% of 820 =
  38. 38.10% of 630 =
  39. 39.15% of 830 =
  40. 40.15% of 600 =

Answer key

  1. 310
  2. 6.2
  3. 176
  4. 28.5
  5. 3
  6. 5.8
  7. 16
  8. 330
  9. 7.6
  10. 22.5
  11. 340
  12. 8.4
  13. 37
  14. 2
  15. 12
  16. 7.5
  17. 8.5
  18. 58.5
  19. 45
  20. 18
  21. 25.5
  22. 133.5
  23. 3.8
  24. 5.7
  25. 96
  26. 146
  27. 23
  28. 115.5
  29. 7.5
  30. 245
  31. 24
  32. 6
  33. 43.5
  34. 10
  35. 36
  36. 130
  37. 8.2
  38. 63
  39. 124.5
  40. 90

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