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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 23 · 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. 1.61 × 5 =
  2. 2.24 × 5 =
  3. 3.94 × 5 =
  4. 4.89 × 50 =
  5. 5.28 × 50 =
  6. 6.60 × 5 =
  7. 7.90 × 50 =
  8. 8.43 × 50 =
  9. 9.54 × 5 =
  10. 10.88 × 50 =
  11. 11.79 × 50 =
  12. 12.30 × 5 =
  13. 13.16 × 50 =
  14. 14.39 × 5 =
  15. 15.13 × 5 =
  16. 16.85 × 50 =
  17. 17.13 × 5 =
  18. 18.49 × 50 =
  19. 19.93 × 5 =
  20. 20.55 × 5 =
  21. 21.68 × 50 =
  22. 22.72 × 50 =
  23. 23.17 × 50 =
  24. 24.21 × 5 =
  25. 25.89 × 50 =
  26. 26.43 × 50 =
  27. 27.13 × 5 =
  28. 28.71 × 5 =
  29. 29.83 × 50 =
  30. 30.90 × 50 =
  31. 31.35 × 50 =
  32. 32.29 × 50 =
  33. 33.94 × 5 =
  34. 34.90 × 50 =
  35. 35.74 × 5 =
  36. 36.17 × 5 =
  37. 37.64 × 5 =
  38. 38.96 × 5 =
  39. 39.17 × 50 =
  40. 40.35 × 5 =

Answer key

  1. 305
  2. 120
  3. 470
  4. 4450
  5. 1400
  6. 300
  7. 4500
  8. 2150
  9. 270
  10. 4400
  11. 3950
  12. 150
  13. 800
  14. 195
  15. 65
  16. 4250
  17. 65
  18. 2450
  19. 465
  20. 275
  21. 3400
  22. 3600
  23. 850
  24. 105
  25. 4450
  26. 2150
  27. 65
  28. 355
  29. 4150
  30. 4500
  31. 1750
  32. 1450
  33. 470
  34. 4500
  35. 370
  36. 85
  37. 320
  38. 480
  39. 850
  40. 175

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