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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 468 · 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. 1.91 × 5 =
  2. 2.26 × 5 =
  3. 3.89 × 5 =
  4. 4.25 × 5 =
  5. 5.81 × 5 =
  6. 6.68 × 5 =
  7. 7.22 × 50 =
  8. 8.94 × 50 =
  9. 9.34 × 5 =
  10. 10.98 × 50 =
  11. 11.76 × 50 =
  12. 12.72 × 5 =
  13. 13.96 × 50 =
  14. 14.41 × 5 =
  15. 15.61 × 50 =
  16. 16.87 × 5 =
  17. 17.82 × 5 =
  18. 18.97 × 5 =
  19. 19.31 × 50 =
  20. 20.13 × 5 =
  21. 21.27 × 50 =
  22. 22.97 × 5 =
  23. 23.98 × 50 =
  24. 24.13 × 50 =
  25. 25.41 × 5 =
  26. 26.18 × 50 =
  27. 27.81 × 50 =
  28. 28.25 × 5 =
  29. 29.32 × 50 =
  30. 30.76 × 50 =
  31. 31.25 × 5 =
  32. 32.94 × 5 =
  33. 33.12 × 50 =
  34. 34.17 × 50 =
  35. 35.72 × 5 =
  36. 36.46 × 50 =
  37. 37.37 × 5 =
  38. 38.38 × 5 =
  39. 39.18 × 50 =
  40. 40.82 × 5 =

Answer key

  1. 455
  2. 130
  3. 445
  4. 125
  5. 405
  6. 340
  7. 1100
  8. 4700
  9. 170
  10. 4900
  11. 3800
  12. 360
  13. 4800
  14. 205
  15. 3050
  16. 435
  17. 410
  18. 485
  19. 1550
  20. 65
  21. 1350
  22. 485
  23. 4900
  24. 650
  25. 205
  26. 900
  27. 4050
  28. 125
  29. 1600
  30. 3800
  31. 125
  32. 470
  33. 600
  34. 850
  35. 360
  36. 2300
  37. 185
  38. 190
  39. 900
  40. 410

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