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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 174 · 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. 1.80 × 50 =
  2. 2.87 × 5 =
  3. 3.48 × 5 =
  4. 4.65 × 50 =
  5. 5.31 × 5 =
  6. 6.87 × 5 =
  7. 7.32 × 50 =
  8. 8.43 × 50 =
  9. 9.34 × 5 =
  10. 10.78 × 5 =
  11. 11.30 × 5 =
  12. 12.61 × 5 =
  13. 13.47 × 5 =
  14. 14.90 × 50 =
  15. 15.24 × 5 =
  16. 16.14 × 5 =
  17. 17.97 × 50 =
  18. 18.30 × 50 =
  19. 19.23 × 5 =
  20. 20.37 × 5 =
  21. 21.60 × 5 =
  22. 22.22 × 50 =
  23. 23.71 × 5 =
  24. 24.42 × 50 =
  25. 25.35 × 50 =
  26. 26.53 × 50 =
  27. 27.24 × 5 =
  28. 28.13 × 50 =
  29. 29.81 × 50 =
  30. 30.78 × 5 =
  31. 31.67 × 50 =
  32. 32.25 × 5 =
  33. 33.58 × 5 =
  34. 34.56 × 50 =
  35. 35.88 × 5 =
  36. 36.19 × 5 =
  37. 37.95 × 5 =
  38. 38.29 × 5 =
  39. 39.83 × 5 =
  40. 40.63 × 50 =

Answer key

  1. 4000
  2. 435
  3. 240
  4. 3250
  5. 155
  6. 435
  7. 1600
  8. 2150
  9. 170
  10. 390
  11. 150
  12. 305
  13. 235
  14. 4500
  15. 120
  16. 70
  17. 4850
  18. 1500
  19. 115
  20. 185
  21. 300
  22. 1100
  23. 355
  24. 2100
  25. 1750
  26. 2650
  27. 120
  28. 650
  29. 4050
  30. 390
  31. 3350
  32. 125
  33. 290
  34. 2800
  35. 440
  36. 95
  37. 475
  38. 145
  39. 415
  40. 3150

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