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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 665 · 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. 1.71 × 5 =
  2. 2.38 × 50 =
  3. 3.34 × 50 =
  4. 4.98 × 5 =
  5. 5.80 × 50 =
  6. 6.15 × 50 =
  7. 7.29 × 5 =
  8. 8.15 × 5 =
  9. 9.18 × 5 =
  10. 10.72 × 5 =
  11. 11.43 × 50 =
  12. 12.16 × 50 =
  13. 13.39 × 5 =
  14. 14.55 × 50 =
  15. 15.91 × 50 =
  16. 16.35 × 5 =
  17. 17.64 × 50 =
  18. 18.64 × 50 =
  19. 19.25 × 50 =
  20. 20.76 × 5 =
  21. 21.83 × 5 =
  22. 22.74 × 50 =
  23. 23.28 × 50 =
  24. 24.44 × 50 =
  25. 25.24 × 50 =
  26. 26.73 × 5 =
  27. 27.38 × 50 =
  28. 28.16 × 5 =
  29. 29.67 × 50 =
  30. 30.25 × 5 =
  31. 31.41 × 5 =
  32. 32.35 × 5 =
  33. 33.71 × 50 =
  34. 34.21 × 50 =
  35. 35.64 × 50 =
  36. 36.48 × 5 =
  37. 37.82 × 50 =
  38. 38.73 × 50 =
  39. 39.67 × 50 =
  40. 40.60 × 5 =

Answer key

  1. 355
  2. 1900
  3. 1700
  4. 490
  5. 4000
  6. 750
  7. 145
  8. 75
  9. 90
  10. 360
  11. 2150
  12. 800
  13. 195
  14. 2750
  15. 4550
  16. 175
  17. 3200
  18. 3200
  19. 1250
  20. 380
  21. 415
  22. 3700
  23. 1400
  24. 2200
  25. 1200
  26. 365
  27. 1900
  28. 80
  29. 3350
  30. 125
  31. 205
  32. 175
  33. 3550
  34. 1050
  35. 3200
  36. 240
  37. 4100
  38. 3650
  39. 3350
  40. 300

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