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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 137 · 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. 1.76 × 50 =
  2. 2.43 × 50 =
  3. 3.44 × 50 =
  4. 4.21 × 50 =
  5. 5.23 × 50 =
  6. 6.18 × 50 =
  7. 7.43 × 5 =
  8. 8.39 × 5 =
  9. 9.40 × 5 =
  10. 10.26 × 50 =
  11. 11.17 × 50 =
  12. 12.50 × 50 =
  13. 13.14 × 50 =
  14. 14.67 × 50 =
  15. 15.88 × 50 =
  16. 16.25 × 5 =
  17. 17.39 × 5 =
  18. 18.96 × 5 =
  19. 19.22 × 5 =
  20. 20.20 × 50 =
  21. 21.24 × 5 =
  22. 22.12 × 5 =
  23. 23.68 × 50 =
  24. 24.18 × 5 =
  25. 25.56 × 50 =
  26. 26.46 × 5 =
  27. 27.34 × 50 =
  28. 28.91 × 50 =
  29. 29.72 × 5 =
  30. 30.74 × 50 =
  31. 31.58 × 5 =
  32. 32.77 × 50 =
  33. 33.77 × 5 =
  34. 34.97 × 5 =
  35. 35.33 × 5 =
  36. 36.90 × 5 =
  37. 37.92 × 5 =
  38. 38.72 × 5 =
  39. 39.37 × 50 =
  40. 40.72 × 5 =

Answer key

  1. 3800
  2. 2150
  3. 2200
  4. 1050
  5. 1150
  6. 900
  7. 215
  8. 195
  9. 200
  10. 1300
  11. 850
  12. 2500
  13. 700
  14. 3350
  15. 4400
  16. 125
  17. 195
  18. 480
  19. 110
  20. 1000
  21. 120
  22. 60
  23. 3400
  24. 90
  25. 2800
  26. 230
  27. 1700
  28. 4550
  29. 360
  30. 3700
  31. 290
  32. 3850
  33. 385
  34. 485
  35. 165
  36. 450
  37. 460
  38. 360
  39. 1850
  40. 360

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