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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 499 · 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. 1.26 × 50 =
  2. 2.28 × 5 =
  3. 3.93 × 50 =
  4. 4.67 × 50 =
  5. 5.18 × 5 =
  6. 6.26 × 5 =
  7. 7.35 × 50 =
  8. 8.42 × 5 =
  9. 9.12 × 5 =
  10. 10.57 × 50 =
  11. 11.78 × 50 =
  12. 12.37 × 5 =
  13. 13.67 × 50 =
  14. 14.15 × 5 =
  15. 15.74 × 5 =
  16. 16.35 × 50 =
  17. 17.71 × 5 =
  18. 18.18 × 5 =
  19. 19.73 × 50 =
  20. 20.61 × 5 =
  21. 21.67 × 5 =
  22. 22.42 × 5 =
  23. 23.52 × 5 =
  24. 24.51 × 50 =
  25. 25.37 × 50 =
  26. 26.18 × 50 =
  27. 27.61 × 5 =
  28. 28.91 × 5 =
  29. 29.91 × 5 =
  30. 30.57 × 50 =
  31. 31.69 × 5 =
  32. 32.40 × 5 =
  33. 33.31 × 5 =
  34. 34.25 × 50 =
  35. 35.37 × 5 =
  36. 36.47 × 50 =
  37. 37.77 × 50 =
  38. 38.18 × 50 =
  39. 39.41 × 5 =
  40. 40.38 × 50 =

Answer key

  1. 1300
  2. 140
  3. 4650
  4. 3350
  5. 90
  6. 130
  7. 1750
  8. 210
  9. 60
  10. 2850
  11. 3900
  12. 185
  13. 3350
  14. 75
  15. 370
  16. 1750
  17. 355
  18. 90
  19. 3650
  20. 305
  21. 335
  22. 210
  23. 260
  24. 2550
  25. 1850
  26. 900
  27. 305
  28. 455
  29. 455
  30. 2850
  31. 345
  32. 200
  33. 155
  34. 1250
  35. 185
  36. 2350
  37. 3850
  38. 900
  39. 205
  40. 1900

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