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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 368 · 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. 1.40 × 50 =
  2. 2.26 × 50 =
  3. 3.74 × 5 =
  4. 4.95 × 50 =
  5. 5.14 × 5 =
  6. 6.47 × 5 =
  7. 7.29 × 5 =
  8. 8.38 × 50 =
  9. 9.81 × 50 =
  10. 10.93 × 50 =
  11. 11.30 × 5 =
  12. 12.43 × 50 =
  13. 13.80 × 5 =
  14. 14.36 × 50 =
  15. 15.25 × 5 =
  16. 16.76 × 50 =
  17. 17.70 × 5 =
  18. 18.34 × 5 =
  19. 19.13 × 5 =
  20. 20.41 × 5 =
  21. 21.34 × 5 =
  22. 22.23 × 50 =
  23. 23.16 × 50 =
  24. 24.98 × 5 =
  25. 25.72 × 50 =
  26. 26.71 × 5 =
  27. 27.89 × 50 =
  28. 28.56 × 50 =
  29. 29.54 × 50 =
  30. 30.36 × 5 =
  31. 31.18 × 5 =
  32. 32.25 × 5 =
  33. 33.49 × 50 =
  34. 34.39 × 50 =
  35. 35.76 × 5 =
  36. 36.70 × 50 =
  37. 37.90 × 50 =
  38. 38.78 × 5 =
  39. 39.55 × 50 =
  40. 40.80 × 5 =

Answer key

  1. 2000
  2. 1300
  3. 370
  4. 4750
  5. 70
  6. 235
  7. 145
  8. 1900
  9. 4050
  10. 4650
  11. 150
  12. 2150
  13. 400
  14. 1800
  15. 125
  16. 3800
  17. 350
  18. 170
  19. 65
  20. 205
  21. 170
  22. 1150
  23. 800
  24. 490
  25. 3600
  26. 355
  27. 4450
  28. 2800
  29. 2700
  30. 180
  31. 90
  32. 125
  33. 2450
  34. 1950
  35. 380
  36. 3500
  37. 4500
  38. 390
  39. 2750
  40. 400

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