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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 88 · 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. 2.16 × 5 =
  3. 3.88 × 5 =
  4. 4.24 × 50 =
  5. 5.97 × 5 =
  6. 6.62 × 50 =
  7. 7.25 × 5 =
  8. 8.34 × 50 =
  9. 9.21 × 50 =
  10. 10.89 × 50 =
  11. 11.93 × 50 =
  12. 12.41 × 5 =
  13. 13.13 × 5 =
  14. 14.40 × 5 =
  15. 15.38 × 5 =
  16. 16.43 × 50 =
  17. 17.31 × 5 =
  18. 18.83 × 50 =
  19. 19.72 × 50 =
  20. 20.60 × 5 =
  21. 21.25 × 5 =
  22. 22.85 × 5 =
  23. 23.19 × 5 =
  24. 24.18 × 5 =
  25. 25.33 × 50 =
  26. 26.27 × 5 =
  27. 27.33 × 5 =
  28. 28.95 × 5 =
  29. 29.86 × 5 =
  30. 30.89 × 5 =
  31. 31.79 × 50 =
  32. 32.29 × 50 =
  33. 33.14 × 5 =
  34. 34.20 × 5 =
  35. 35.88 × 50 =
  36. 36.76 × 50 =
  37. 37.88 × 5 =
  38. 38.65 × 50 =
  39. 39.41 × 5 =
  40. 40.16 × 5 =

Answer key

  1. 3800
  2. 80
  3. 440
  4. 1200
  5. 485
  6. 3100
  7. 125
  8. 1700
  9. 1050
  10. 4450
  11. 4650
  12. 205
  13. 65
  14. 200
  15. 190
  16. 2150
  17. 155
  18. 4150
  19. 3600
  20. 300
  21. 125
  22. 425
  23. 95
  24. 90
  25. 1650
  26. 135
  27. 165
  28. 475
  29. 430
  30. 445
  31. 3950
  32. 1450
  33. 70
  34. 100
  35. 4400
  36. 3800
  37. 440
  38. 3250
  39. 205
  40. 80

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