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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 314 · 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. 1.22 × 5 =
  2. 2.15 × 5 =
  3. 3.57 × 50 =
  4. 4.48 × 50 =
  5. 5.46 × 5 =
  6. 6.39 × 50 =
  7. 7.73 × 5 =
  8. 8.59 × 50 =
  9. 9.57 × 50 =
  10. 10.28 × 50 =
  11. 11.75 × 5 =
  12. 12.42 × 50 =
  13. 13.55 × 5 =
  14. 14.51 × 5 =
  15. 15.77 × 5 =
  16. 16.19 × 5 =
  17. 17.98 × 50 =
  18. 18.69 × 5 =
  19. 19.78 × 50 =
  20. 20.14 × 50 =
  21. 21.60 × 5 =
  22. 22.13 × 5 =
  23. 23.12 × 5 =
  24. 24.17 × 50 =
  25. 25.78 × 50 =
  26. 26.60 × 5 =
  27. 27.36 × 5 =
  28. 28.90 × 5 =
  29. 29.32 × 50 =
  30. 30.39 × 50 =
  31. 31.37 × 50 =
  32. 32.33 × 5 =
  33. 33.81 × 50 =
  34. 34.71 × 5 =
  35. 35.35 × 5 =
  36. 36.55 × 5 =
  37. 37.45 × 50 =
  38. 38.59 × 5 =
  39. 39.24 × 50 =
  40. 40.24 × 50 =

Answer key

  1. 110
  2. 75
  3. 2850
  4. 2400
  5. 230
  6. 1950
  7. 365
  8. 2950
  9. 2850
  10. 1400
  11. 375
  12. 2100
  13. 275
  14. 255
  15. 385
  16. 95
  17. 4900
  18. 345
  19. 3900
  20. 700
  21. 300
  22. 65
  23. 60
  24. 850
  25. 3900
  26. 300
  27. 180
  28. 450
  29. 1600
  30. 1950
  31. 1850
  32. 165
  33. 4050
  34. 355
  35. 175
  36. 275
  37. 2250
  38. 295
  39. 1200
  40. 1200

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