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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 812 · 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. 1.77 × 50 =
  2. 2.65 × 5 =
  3. 3.16 × 5 =
  4. 4.83 × 50 =
  5. 5.86 × 5 =
  6. 6.19 × 5 =
  7. 7.40 × 5 =
  8. 8.73 × 50 =
  9. 9.25 × 5 =
  10. 10.85 × 5 =
  11. 11.94 × 50 =
  12. 12.54 × 50 =
  13. 13.46 × 5 =
  14. 14.13 × 5 =
  15. 15.66 × 5 =
  16. 16.39 × 50 =
  17. 17.97 × 50 =
  18. 18.68 × 5 =
  19. 19.14 × 50 =
  20. 20.42 × 5 =
  21. 21.91 × 50 =
  22. 22.28 × 50 =
  23. 23.58 × 50 =
  24. 24.29 × 50 =
  25. 25.13 × 5 =
  26. 26.20 × 50 =
  27. 27.19 × 5 =
  28. 28.70 × 50 =
  29. 29.27 × 5 =
  30. 30.35 × 50 =
  31. 31.39 × 5 =
  32. 32.88 × 5 =
  33. 33.82 × 5 =
  34. 34.15 × 5 =
  35. 35.26 × 5 =
  36. 36.82 × 5 =
  37. 37.79 × 5 =
  38. 38.20 × 50 =
  39. 39.94 × 5 =
  40. 40.47 × 50 =

Answer key

  1. 3850
  2. 325
  3. 80
  4. 4150
  5. 430
  6. 95
  7. 200
  8. 3650
  9. 125
  10. 425
  11. 4700
  12. 2700
  13. 230
  14. 65
  15. 330
  16. 1950
  17. 4850
  18. 340
  19. 700
  20. 210
  21. 4550
  22. 1400
  23. 2900
  24. 1450
  25. 65
  26. 1000
  27. 95
  28. 3500
  29. 135
  30. 1750
  31. 195
  32. 440
  33. 410
  34. 75
  35. 130
  36. 410
  37. 395
  38. 1000
  39. 470
  40. 2350

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