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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 466 · 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. 1.69 × 5 =
  2. 2.96 × 5 =
  3. 3.26 × 50 =
  4. 4.35 × 5 =
  5. 5.13 × 5 =
  6. 6.38 × 5 =
  7. 7.56 × 50 =
  8. 8.27 × 50 =
  9. 9.71 × 50 =
  10. 10.83 × 50 =
  11. 11.27 × 50 =
  12. 12.88 × 50 =
  13. 13.19 × 5 =
  14. 14.45 × 50 =
  15. 15.50 × 50 =
  16. 16.54 × 50 =
  17. 17.98 × 5 =
  18. 18.96 × 5 =
  19. 19.48 × 5 =
  20. 20.22 × 5 =
  21. 21.29 × 5 =
  22. 22.28 × 50 =
  23. 23.86 × 5 =
  24. 24.25 × 5 =
  25. 25.17 × 5 =
  26. 26.21 × 50 =
  27. 27.25 × 50 =
  28. 28.28 × 5 =
  29. 29.19 × 5 =
  30. 30.13 × 5 =
  31. 31.90 × 50 =
  32. 32.76 × 50 =
  33. 33.70 × 5 =
  34. 34.78 × 5 =
  35. 35.42 × 5 =
  36. 36.54 × 5 =
  37. 37.50 × 50 =
  38. 38.14 × 50 =
  39. 39.43 × 50 =
  40. 40.87 × 5 =

Answer key

  1. 345
  2. 480
  3. 1300
  4. 175
  5. 65
  6. 190
  7. 2800
  8. 1350
  9. 3550
  10. 4150
  11. 1350
  12. 4400
  13. 95
  14. 2250
  15. 2500
  16. 2700
  17. 490
  18. 480
  19. 240
  20. 110
  21. 145
  22. 1400
  23. 430
  24. 125
  25. 85
  26. 1050
  27. 1250
  28. 140
  29. 95
  30. 65
  31. 4500
  32. 3800
  33. 350
  34. 390
  35. 210
  36. 270
  37. 2500
  38. 700
  39. 2150
  40. 435

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