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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 667 · 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. 2.36 × 50 =
  3. 3.44 × 50 =
  4. 4.88 × 50 =
  5. 5.38 × 50 =
  6. 6.50 × 50 =
  7. 7.84 × 50 =
  8. 8.77 × 5 =
  9. 9.83 × 5 =
  10. 10.96 × 50 =
  11. 11.62 × 50 =
  12. 12.91 × 5 =
  13. 13.35 × 50 =
  14. 14.15 × 50 =
  15. 15.54 × 50 =
  16. 16.38 × 50 =
  17. 17.33 × 50 =
  18. 18.34 × 50 =
  19. 19.88 × 50 =
  20. 20.87 × 50 =
  21. 21.65 × 5 =
  22. 22.40 × 50 =
  23. 23.32 × 5 =
  24. 24.23 × 5 =
  25. 25.45 × 5 =
  26. 26.35 × 50 =
  27. 27.66 × 50 =
  28. 28.55 × 5 =
  29. 29.29 × 5 =
  30. 30.42 × 50 =
  31. 31.96 × 50 =
  32. 32.22 × 5 =
  33. 33.89 × 5 =
  34. 34.92 × 5 =
  35. 35.65 × 5 =
  36. 36.66 × 50 =
  37. 37.24 × 50 =
  38. 38.32 × 5 =
  39. 39.59 × 50 =
  40. 40.90 × 50 =

Answer key

  1. 190
  2. 1800
  3. 2200
  4. 4400
  5. 1900
  6. 2500
  7. 4200
  8. 385
  9. 415
  10. 4800
  11. 3100
  12. 455
  13. 1750
  14. 750
  15. 2700
  16. 1900
  17. 1650
  18. 1700
  19. 4400
  20. 4350
  21. 325
  22. 2000
  23. 160
  24. 115
  25. 225
  26. 1750
  27. 3300
  28. 275
  29. 145
  30. 2100
  31. 4800
  32. 110
  33. 445
  34. 460
  35. 325
  36. 3300
  37. 1200
  38. 160
  39. 2950
  40. 4500

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