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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 113 · 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. 1.31 × 50 =
  2. 2.17 × 5 =
  3. 3.59 × 50 =
  4. 4.61 × 50 =
  5. 5.83 × 5 =
  6. 6.32 × 5 =
  7. 7.69 × 5 =
  8. 8.71 × 50 =
  9. 9.67 × 5 =
  10. 10.39 × 50 =
  11. 11.83 × 50 =
  12. 12.75 × 50 =
  13. 13.74 × 5 =
  14. 14.64 × 5 =
  15. 15.87 × 50 =
  16. 16.14 × 5 =
  17. 17.48 × 50 =
  18. 18.41 × 50 =
  19. 19.23 × 5 =
  20. 20.18 × 50 =
  21. 21.31 × 5 =
  22. 22.86 × 50 =
  23. 23.39 × 5 =
  24. 24.38 × 5 =
  25. 25.72 × 5 =
  26. 26.67 × 5 =
  27. 27.81 × 50 =
  28. 28.87 × 50 =
  29. 29.25 × 50 =
  30. 30.85 × 50 =
  31. 31.31 × 5 =
  32. 32.84 × 50 =
  33. 33.91 × 5 =
  34. 34.50 × 50 =
  35. 35.22 × 50 =
  36. 36.82 × 5 =
  37. 37.68 × 50 =
  38. 38.80 × 5 =
  39. 39.33 × 5 =
  40. 40.48 × 5 =

Answer key

  1. 1550
  2. 85
  3. 2950
  4. 3050
  5. 415
  6. 160
  7. 345
  8. 3550
  9. 335
  10. 1950
  11. 4150
  12. 3750
  13. 370
  14. 320
  15. 4350
  16. 70
  17. 2400
  18. 2050
  19. 115
  20. 900
  21. 155
  22. 4300
  23. 195
  24. 190
  25. 360
  26. 335
  27. 4050
  28. 4350
  29. 1250
  30. 4250
  31. 155
  32. 4200
  33. 455
  34. 2500
  35. 1100
  36. 410
  37. 3400
  38. 400
  39. 165
  40. 240

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