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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 677 · 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. 1.46 × 5 =
  2. 2.65 × 50 =
  3. 3.37 × 50 =
  4. 4.36 × 5 =
  5. 5.66 × 50 =
  6. 6.81 × 50 =
  7. 7.41 × 5 =
  8. 8.57 × 50 =
  9. 9.76 × 50 =
  10. 10.49 × 5 =
  11. 11.86 × 5 =
  12. 12.47 × 50 =
  13. 13.39 × 50 =
  14. 14.59 × 50 =
  15. 15.18 × 5 =
  16. 16.28 × 5 =
  17. 17.41 × 5 =
  18. 18.19 × 50 =
  19. 19.56 × 5 =
  20. 20.36 × 5 =
  21. 21.26 × 50 =
  22. 22.13 × 5 =
  23. 23.54 × 5 =
  24. 24.43 × 5 =
  25. 25.38 × 50 =
  26. 26.39 × 50 =
  27. 27.30 × 50 =
  28. 28.66 × 5 =
  29. 29.51 × 5 =
  30. 30.24 × 50 =
  31. 31.26 × 5 =
  32. 32.55 × 50 =
  33. 33.50 × 50 =
  34. 34.19 × 5 =
  35. 35.86 × 5 =
  36. 36.13 × 50 =
  37. 37.47 × 50 =
  38. 38.82 × 50 =
  39. 39.55 × 5 =
  40. 40.81 × 50 =

Answer key

  1. 230
  2. 3250
  3. 1850
  4. 180
  5. 3300
  6. 4050
  7. 205
  8. 2850
  9. 3800
  10. 245
  11. 430
  12. 2350
  13. 1950
  14. 2950
  15. 90
  16. 140
  17. 205
  18. 950
  19. 280
  20. 180
  21. 1300
  22. 65
  23. 270
  24. 215
  25. 1900
  26. 1950
  27. 1500
  28. 330
  29. 255
  30. 1200
  31. 130
  32. 2750
  33. 2500
  34. 95
  35. 430
  36. 650
  37. 2350
  38. 4100
  39. 275
  40. 4050

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