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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 146 · 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. 1.49 × 5 =
  2. 2.36 × 50 =
  3. 3.22 × 50 =
  4. 4.31 × 50 =
  5. 5.22 × 5 =
  6. 6.23 × 50 =
  7. 7.62 × 50 =
  8. 8.93 × 5 =
  9. 9.39 × 50 =
  10. 10.57 × 5 =
  11. 11.26 × 5 =
  12. 12.41 × 5 =
  13. 13.62 × 5 =
  14. 14.16 × 50 =
  15. 15.23 × 50 =
  16. 16.61 × 5 =
  17. 17.19 × 50 =
  18. 18.94 × 50 =
  19. 19.49 × 50 =
  20. 20.15 × 5 =
  21. 21.73 × 5 =
  22. 22.87 × 50 =
  23. 23.44 × 5 =
  24. 24.26 × 5 =
  25. 25.36 × 5 =
  26. 26.85 × 50 =
  27. 27.96 × 5 =
  28. 28.40 × 5 =
  29. 29.19 × 50 =
  30. 30.71 × 5 =
  31. 31.23 × 50 =
  32. 32.44 × 5 =
  33. 33.83 × 50 =
  34. 34.62 × 50 =
  35. 35.90 × 50 =
  36. 36.34 × 50 =
  37. 37.25 × 5 =
  38. 38.91 × 5 =
  39. 39.66 × 5 =
  40. 40.33 × 50 =

Answer key

  1. 245
  2. 1800
  3. 1100
  4. 1550
  5. 110
  6. 1150
  7. 3100
  8. 465
  9. 1950
  10. 285
  11. 130
  12. 205
  13. 310
  14. 800
  15. 1150
  16. 305
  17. 950
  18. 4700
  19. 2450
  20. 75
  21. 365
  22. 4350
  23. 220
  24. 130
  25. 180
  26. 4250
  27. 480
  28. 200
  29. 950
  30. 355
  31. 1150
  32. 220
  33. 4150
  34. 3100
  35. 4500
  36. 1700
  37. 125
  38. 455
  39. 330
  40. 1650

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