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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 365 · 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. 1.85 × 5 =
  2. 2.62 × 5 =
  3. 3.41 × 5 =
  4. 4.43 × 5 =
  5. 5.33 × 50 =
  6. 6.17 × 5 =
  7. 7.19 × 5 =
  8. 8.48 × 50 =
  9. 9.35 × 5 =
  10. 10.56 × 50 =
  11. 11.25 × 50 =
  12. 12.71 × 50 =
  13. 13.16 × 50 =
  14. 14.79 × 50 =
  15. 15.26 × 5 =
  16. 16.21 × 50 =
  17. 17.31 × 5 =
  18. 18.47 × 5 =
  19. 19.72 × 50 =
  20. 20.37 × 50 =
  21. 21.81 × 5 =
  22. 22.20 × 50 =
  23. 23.69 × 50 =
  24. 24.14 × 50 =
  25. 25.88 × 50 =
  26. 26.20 × 5 =
  27. 27.83 × 5 =
  28. 28.40 × 5 =
  29. 29.35 × 50 =
  30. 30.78 × 5 =
  31. 31.34 × 50 =
  32. 32.70 × 5 =
  33. 33.26 × 5 =
  34. 34.92 × 5 =
  35. 35.70 × 50 =
  36. 36.18 × 5 =
  37. 37.35 × 50 =
  38. 38.38 × 5 =
  39. 39.49 × 50 =
  40. 40.32 × 5 =

Answer key

  1. 425
  2. 310
  3. 205
  4. 215
  5. 1650
  6. 85
  7. 95
  8. 2400
  9. 175
  10. 2800
  11. 1250
  12. 3550
  13. 800
  14. 3950
  15. 130
  16. 1050
  17. 155
  18. 235
  19. 3600
  20. 1850
  21. 405
  22. 1000
  23. 3450
  24. 700
  25. 4400
  26. 100
  27. 415
  28. 200
  29. 1750
  30. 390
  31. 1700
  32. 350
  33. 130
  34. 460
  35. 3500
  36. 90
  37. 1750
  38. 190
  39. 2450
  40. 160

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