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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 490 · 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. 1.39 × 50 =
  2. 2.72 × 50 =
  3. 3.43 × 5 =
  4. 4.27 × 50 =
  5. 5.92 × 5 =
  6. 6.12 × 50 =
  7. 7.16 × 5 =
  8. 8.32 × 5 =
  9. 9.54 × 50 =
  10. 10.23 × 5 =
  11. 11.61 × 5 =
  12. 12.48 × 5 =
  13. 13.53 × 50 =
  14. 14.26 × 5 =
  15. 15.76 × 50 =
  16. 16.20 × 50 =
  17. 17.38 × 5 =
  18. 18.90 × 50 =
  19. 19.72 × 50 =
  20. 20.14 × 5 =
  21. 21.20 × 5 =
  22. 22.24 × 50 =
  23. 23.79 × 50 =
  24. 24.48 × 50 =
  25. 25.88 × 50 =
  26. 26.20 × 50 =
  27. 27.58 × 50 =
  28. 28.24 × 5 =
  29. 29.38 × 50 =
  30. 30.86 × 5 =
  31. 31.87 × 50 =
  32. 32.57 × 5 =
  33. 33.23 × 50 =
  34. 34.57 × 5 =
  35. 35.83 × 50 =
  36. 36.48 × 5 =
  37. 37.36 × 5 =
  38. 38.46 × 5 =
  39. 39.75 × 50 =
  40. 40.52 × 5 =

Answer key

  1. 1950
  2. 3600
  3. 215
  4. 1350
  5. 460
  6. 600
  7. 80
  8. 160
  9. 2700
  10. 115
  11. 305
  12. 240
  13. 2650
  14. 130
  15. 3800
  16. 1000
  17. 190
  18. 4500
  19. 3600
  20. 70
  21. 100
  22. 1200
  23. 3950
  24. 2400
  25. 4400
  26. 1000
  27. 2900
  28. 120
  29. 1900
  30. 430
  31. 4350
  32. 285
  33. 1150
  34. 285
  35. 4150
  36. 240
  37. 180
  38. 230
  39. 3750
  40. 260

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