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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 26 · 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. 1.16 × 50 =
  2. 2.77 × 50 =
  3. 3.49 × 5 =
  4. 4.24 × 50 =
  5. 5.98 × 50 =
  6. 6.36 × 5 =
  7. 7.76 × 50 =
  8. 8.35 × 50 =
  9. 9.21 × 5 =
  10. 10.12 × 50 =
  11. 11.76 × 50 =
  12. 12.38 × 5 =
  13. 13.89 × 5 =
  14. 14.81 × 5 =
  15. 15.33 × 50 =
  16. 16.30 × 50 =
  17. 17.91 × 5 =
  18. 18.53 × 50 =
  19. 19.79 × 50 =
  20. 20.85 × 50 =
  21. 21.33 × 5 =
  22. 22.74 × 5 =
  23. 23.46 × 5 =
  24. 24.22 × 5 =
  25. 25.33 × 5 =
  26. 26.58 × 50 =
  27. 27.74 × 5 =
  28. 28.90 × 5 =
  29. 29.39 × 50 =
  30. 30.86 × 50 =
  31. 31.74 × 5 =
  32. 32.26 × 5 =
  33. 33.23 × 5 =
  34. 34.14 × 50 =
  35. 35.85 × 50 =
  36. 36.17 × 5 =
  37. 37.30 × 5 =
  38. 38.13 × 5 =
  39. 39.84 × 50 =
  40. 40.48 × 50 =

Answer key

  1. 800
  2. 3850
  3. 245
  4. 1200
  5. 4900
  6. 180
  7. 3800
  8. 1750
  9. 105
  10. 600
  11. 3800
  12. 190
  13. 445
  14. 405
  15. 1650
  16. 1500
  17. 455
  18. 2650
  19. 3950
  20. 4250
  21. 165
  22. 370
  23. 230
  24. 110
  25. 165
  26. 2900
  27. 370
  28. 450
  29. 1950
  30. 4300
  31. 370
  32. 130
  33. 115
  34. 700
  35. 4250
  36. 85
  37. 150
  38. 65
  39. 4200
  40. 2400

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