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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 125 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.81 × 50 =
  2. 2.36 × 50 =
  3. 3.93 × 50 =
  4. 4.86 × 50 =
  5. 5.24 × 5 =
  6. 6.26 × 50 =
  7. 7.66 × 5 =
  8. 8.49 × 5 =
  9. 9.51 × 5 =
  10. 10.15 × 5 =
  11. 11.86 × 50 =
  12. 12.73 × 50 =
  13. 13.21 × 50 =
  14. 14.28 × 50 =
  15. 15.32 × 50 =
  16. 16.92 × 5 =
  17. 17.37 × 5 =
  18. 18.85 × 50 =
  19. 19.56 × 5 =
  20. 20.78 × 50 =
  21. 21.35 × 50 =
  22. 22.92 × 50 =
  23. 23.40 × 5 =
  24. 24.94 × 5 =
  25. 25.23 × 5 =
  26. 26.23 × 50 =
  27. 27.41 × 50 =
  28. 28.62 × 50 =
  29. 29.24 × 5 =
  30. 30.19 × 5 =
  31. 31.26 × 5 =
  32. 32.19 × 50 =
  33. 33.16 × 5 =
  34. 34.92 × 50 =
  35. 35.91 × 5 =
  36. 36.71 × 5 =
  37. 37.73 × 5 =
  38. 38.69 × 5 =
  39. 39.87 × 50 =
  40. 40.37 × 50 =

Answer key

  1. 4050
  2. 1800
  3. 4650
  4. 4300
  5. 120
  6. 1300
  7. 330
  8. 245
  9. 255
  10. 75
  11. 4300
  12. 3650
  13. 1050
  14. 1400
  15. 1600
  16. 460
  17. 185
  18. 4250
  19. 280
  20. 3900
  21. 1750
  22. 4600
  23. 200
  24. 470
  25. 115
  26. 1150
  27. 2050
  28. 3100
  29. 120
  30. 95
  31. 130
  32. 950
  33. 80
  34. 4600
  35. 455
  36. 355
  37. 365
  38. 345
  39. 4350
  40. 1850

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