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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 796 · 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. 1.89 × 50 =
  2. 2.46 × 50 =
  3. 3.27 × 5 =
  4. 4.44 × 50 =
  5. 5.24 × 5 =
  6. 6.29 × 50 =
  7. 7.83 × 50 =
  8. 8.82 × 50 =
  9. 9.68 × 5 =
  10. 10.87 × 5 =
  11. 11.16 × 5 =
  12. 12.34 × 50 =
  13. 13.22 × 5 =
  14. 14.49 × 5 =
  15. 15.36 × 5 =
  16. 16.47 × 5 =
  17. 17.20 × 50 =
  18. 18.60 × 5 =
  19. 19.50 × 50 =
  20. 20.96 × 50 =
  21. 21.62 × 5 =
  22. 22.20 × 5 =
  23. 23.33 × 5 =
  24. 24.87 × 5 =
  25. 25.70 × 5 =
  26. 26.19 × 5 =
  27. 27.46 × 5 =
  28. 28.71 × 50 =
  29. 29.32 × 5 =
  30. 30.81 × 50 =
  31. 31.75 × 5 =
  32. 32.40 × 5 =
  33. 33.46 × 50 =
  34. 34.16 × 50 =
  35. 35.21 × 50 =
  36. 36.84 × 5 =
  37. 37.83 × 50 =
  38. 38.72 × 50 =
  39. 39.88 × 5 =
  40. 40.89 × 50 =

Answer key

  1. 4450
  2. 2300
  3. 135
  4. 2200
  5. 120
  6. 1450
  7. 4150
  8. 4100
  9. 340
  10. 435
  11. 80
  12. 1700
  13. 110
  14. 245
  15. 180
  16. 235
  17. 1000
  18. 300
  19. 2500
  20. 4800
  21. 310
  22. 100
  23. 165
  24. 435
  25. 350
  26. 95
  27. 230
  28. 3550
  29. 160
  30. 4050
  31. 375
  32. 200
  33. 2300
  34. 800
  35. 1050
  36. 420
  37. 4150
  38. 3600
  39. 440
  40. 4450

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