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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 737 · 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. 1.19 × 50 =
  2. 2.33 × 50 =
  3. 3.70 × 50 =
  4. 4.35 × 5 =
  5. 5.30 × 50 =
  6. 6.14 × 50 =
  7. 7.48 × 50 =
  8. 8.35 × 5 =
  9. 9.15 × 50 =
  10. 10.35 × 50 =
  11. 11.53 × 5 =
  12. 12.90 × 5 =
  13. 13.22 × 5 =
  14. 14.96 × 5 =
  15. 15.96 × 5 =
  16. 16.17 × 5 =
  17. 17.24 × 5 =
  18. 18.17 × 5 =
  19. 19.79 × 50 =
  20. 20.39 × 50 =
  21. 21.25 × 5 =
  22. 22.22 × 50 =
  23. 23.32 × 50 =
  24. 24.27 × 5 =
  25. 25.50 × 50 =
  26. 26.51 × 5 =
  27. 27.66 × 50 =
  28. 28.26 × 5 =
  29. 29.44 × 5 =
  30. 30.48 × 50 =
  31. 31.71 × 5 =
  32. 32.51 × 5 =
  33. 33.78 × 50 =
  34. 34.44 × 50 =
  35. 35.35 × 5 =
  36. 36.74 × 5 =
  37. 37.56 × 5 =
  38. 38.74 × 5 =
  39. 39.93 × 5 =
  40. 40.61 × 5 =

Answer key

  1. 950
  2. 1650
  3. 3500
  4. 175
  5. 1500
  6. 700
  7. 2400
  8. 175
  9. 750
  10. 1750
  11. 265
  12. 450
  13. 110
  14. 480
  15. 480
  16. 85
  17. 120
  18. 85
  19. 3950
  20. 1950
  21. 125
  22. 1100
  23. 1600
  24. 135
  25. 2500
  26. 255
  27. 3300
  28. 130
  29. 220
  30. 2400
  31. 355
  32. 255
  33. 3900
  34. 2200
  35. 175
  36. 370
  37. 280
  38. 370
  39. 465
  40. 305

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