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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 168 · 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. 1.74 × 50 =
  2. 2.54 × 5 =
  3. 3.43 × 50 =
  4. 4.89 × 5 =
  5. 5.32 × 50 =
  6. 6.28 × 50 =
  7. 7.49 × 50 =
  8. 8.66 × 50 =
  9. 9.84 × 5 =
  10. 10.58 × 50 =
  11. 11.90 × 5 =
  12. 12.82 × 50 =
  13. 13.20 × 50 =
  14. 14.14 × 5 =
  15. 15.68 × 5 =
  16. 16.24 × 5 =
  17. 17.31 × 5 =
  18. 18.58 × 50 =
  19. 19.13 × 5 =
  20. 20.70 × 5 =
  21. 21.31 × 50 =
  22. 22.92 × 5 =
  23. 23.46 × 50 =
  24. 24.71 × 5 =
  25. 25.54 × 5 =
  26. 26.36 × 5 =
  27. 27.95 × 5 =
  28. 28.78 × 5 =
  29. 29.15 × 5 =
  30. 30.79 × 50 =
  31. 31.39 × 50 =
  32. 32.34 × 50 =
  33. 33.13 × 50 =
  34. 34.13 × 5 =
  35. 35.12 × 5 =
  36. 36.19 × 50 =
  37. 37.17 × 5 =
  38. 38.72 × 50 =
  39. 39.14 × 50 =
  40. 40.59 × 50 =

Answer key

  1. 3700
  2. 270
  3. 2150
  4. 445
  5. 1600
  6. 1400
  7. 2450
  8. 3300
  9. 420
  10. 2900
  11. 450
  12. 4100
  13. 1000
  14. 70
  15. 340
  16. 120
  17. 155
  18. 2900
  19. 65
  20. 350
  21. 1550
  22. 460
  23. 2300
  24. 355
  25. 270
  26. 180
  27. 475
  28. 390
  29. 75
  30. 3950
  31. 1950
  32. 1700
  33. 650
  34. 65
  35. 60
  36. 950
  37. 85
  38. 3600
  39. 700
  40. 2950

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