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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 363 · 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. 1.38 × 5 =
  2. 2.18 × 50 =
  3. 3.82 × 50 =
  4. 4.57 × 5 =
  5. 5.22 × 5 =
  6. 6.73 × 5 =
  7. 7.12 × 5 =
  8. 8.86 × 5 =
  9. 9.40 × 50 =
  10. 10.88 × 5 =
  11. 11.49 × 5 =
  12. 12.25 × 50 =
  13. 13.34 × 50 =
  14. 14.15 × 5 =
  15. 15.55 × 5 =
  16. 16.62 × 50 =
  17. 17.84 × 50 =
  18. 18.30 × 50 =
  19. 19.83 × 5 =
  20. 20.54 × 50 =
  21. 21.32 × 5 =
  22. 22.32 × 50 =
  23. 23.13 × 5 =
  24. 24.79 × 5 =
  25. 25.40 × 50 =
  26. 26.27 × 5 =
  27. 27.17 × 5 =
  28. 28.89 × 5 =
  29. 29.66 × 50 =
  30. 30.35 × 5 =
  31. 31.27 × 50 =
  32. 32.82 × 5 =
  33. 33.19 × 5 =
  34. 34.73 × 5 =
  35. 35.18 × 5 =
  36. 36.86 × 50 =
  37. 37.87 × 5 =
  38. 38.84 × 5 =
  39. 39.56 × 5 =
  40. 40.73 × 5 =

Answer key

  1. 190
  2. 900
  3. 4100
  4. 285
  5. 110
  6. 365
  7. 60
  8. 430
  9. 2000
  10. 440
  11. 245
  12. 1250
  13. 1700
  14. 75
  15. 275
  16. 3100
  17. 4200
  18. 1500
  19. 415
  20. 2700
  21. 160
  22. 1600
  23. 65
  24. 395
  25. 2000
  26. 135
  27. 85
  28. 445
  29. 3300
  30. 175
  31. 1350
  32. 410
  33. 95
  34. 365
  35. 90
  36. 4300
  37. 435
  38. 420
  39. 280
  40. 365

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