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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 310 · 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. 2.43 × 5 =
  3. 3.37 × 50 =
  4. 4.81 × 50 =
  5. 5.43 × 50 =
  6. 6.62 × 5 =
  7. 7.48 × 50 =
  8. 8.28 × 5 =
  9. 9.46 × 5 =
  10. 10.17 × 50 =
  11. 11.97 × 50 =
  12. 12.49 × 5 =
  13. 13.17 × 50 =
  14. 14.84 × 5 =
  15. 15.25 × 50 =
  16. 16.33 × 50 =
  17. 17.56 × 5 =
  18. 18.48 × 5 =
  19. 19.35 × 50 =
  20. 20.71 × 5 =
  21. 21.36 × 5 =
  22. 22.64 × 5 =
  23. 23.44 × 50 =
  24. 24.35 × 50 =
  25. 25.26 × 50 =
  26. 26.77 × 50 =
  27. 27.68 × 50 =
  28. 28.31 × 5 =
  29. 29.89 × 5 =
  30. 30.92 × 50 =
  31. 31.83 × 50 =
  32. 32.42 × 5 =
  33. 33.80 × 50 =
  34. 34.21 × 5 =
  35. 35.22 × 50 =
  36. 36.63 × 50 =
  37. 37.83 × 5 =
  38. 38.86 × 5 =
  39. 39.97 × 5 =
  40. 40.24 × 5 =

Answer key

  1. 1300
  2. 215
  3. 1850
  4. 4050
  5. 2150
  6. 310
  7. 2400
  8. 140
  9. 230
  10. 850
  11. 4850
  12. 245
  13. 850
  14. 420
  15. 1250
  16. 1650
  17. 280
  18. 240
  19. 1750
  20. 355
  21. 180
  22. 320
  23. 2200
  24. 1750
  25. 1300
  26. 3850
  27. 3400
  28. 155
  29. 445
  30. 4600
  31. 4150
  32. 210
  33. 4000
  34. 105
  35. 1100
  36. 3150
  37. 415
  38. 430
  39. 485
  40. 120

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