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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 456 · 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. 1.50 × 50 =
  2. 2.44 × 5 =
  3. 3.36 × 50 =
  4. 4.44 × 50 =
  5. 5.56 × 5 =
  6. 6.24 × 50 =
  7. 7.60 × 5 =
  8. 8.48 × 5 =
  9. 9.42 × 5 =
  10. 10.98 × 50 =
  11. 11.79 × 5 =
  12. 12.52 × 5 =
  13. 13.38 × 50 =
  14. 14.22 × 50 =
  15. 15.46 × 50 =
  16. 16.41 × 50 =
  17. 17.26 × 50 =
  18. 18.85 × 5 =
  19. 19.67 × 50 =
  20. 20.21 × 5 =
  21. 21.61 × 50 =
  22. 22.15 × 50 =
  23. 23.28 × 50 =
  24. 24.85 × 5 =
  25. 25.20 × 5 =
  26. 26.78 × 50 =
  27. 27.94 × 5 =
  28. 28.18 × 50 =
  29. 29.98 × 5 =
  30. 30.54 × 50 =
  31. 31.71 × 5 =
  32. 32.37 × 5 =
  33. 33.72 × 50 =
  34. 34.91 × 5 =
  35. 35.55 × 5 =
  36. 36.50 × 50 =
  37. 37.67 × 50 =
  38. 38.84 × 5 =
  39. 39.17 × 5 =
  40. 40.74 × 50 =

Answer key

  1. 2500
  2. 220
  3. 1800
  4. 2200
  5. 280
  6. 1200
  7. 300
  8. 240
  9. 210
  10. 4900
  11. 395
  12. 260
  13. 1900
  14. 1100
  15. 2300
  16. 2050
  17. 1300
  18. 425
  19. 3350
  20. 105
  21. 3050
  22. 750
  23. 1400
  24. 425
  25. 100
  26. 3900
  27. 470
  28. 900
  29. 490
  30. 2700
  31. 355
  32. 185
  33. 3600
  34. 455
  35. 275
  36. 2500
  37. 3350
  38. 420
  39. 85
  40. 3700

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