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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 80 · 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. 1.32 × 50 =
  2. 2.45 × 50 =
  3. 3.17 × 5 =
  4. 4.34 × 5 =
  5. 5.58 × 50 =
  6. 6.72 × 50 =
  7. 7.68 × 5 =
  8. 8.14 × 5 =
  9. 9.36 × 5 =
  10. 10.69 × 5 =
  11. 11.95 × 5 =
  12. 12.64 × 50 =
  13. 13.49 × 50 =
  14. 14.48 × 50 =
  15. 15.94 × 50 =
  16. 16.12 × 50 =
  17. 17.50 × 50 =
  18. 18.39 × 5 =
  19. 19.26 × 5 =
  20. 20.26 × 50 =
  21. 21.91 × 5 =
  22. 22.75 × 5 =
  23. 23.13 × 50 =
  24. 24.33 × 50 =
  25. 25.17 × 50 =
  26. 26.78 × 50 =
  27. 27.43 × 50 =
  28. 28.50 × 5 =
  29. 29.33 × 5 =
  30. 30.72 × 50 =
  31. 31.46 × 50 =
  32. 32.28 × 5 =
  33. 33.44 × 5 =
  34. 34.17 × 5 =
  35. 35.71 × 5 =
  36. 36.70 × 5 =
  37. 37.50 × 50 =
  38. 38.71 × 5 =
  39. 39.59 × 5 =
  40. 40.34 × 50 =

Answer key

  1. 1600
  2. 2250
  3. 85
  4. 170
  5. 2900
  6. 3600
  7. 340
  8. 70
  9. 180
  10. 345
  11. 475
  12. 3200
  13. 2450
  14. 2400
  15. 4700
  16. 600
  17. 2500
  18. 195
  19. 130
  20. 1300
  21. 455
  22. 375
  23. 650
  24. 1650
  25. 850
  26. 3900
  27. 2150
  28. 250
  29. 165
  30. 3600
  31. 2300
  32. 140
  33. 220
  34. 85
  35. 355
  36. 350
  37. 2500
  38. 355
  39. 295
  40. 1700

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