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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 259 · 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. 1.36 × 5 =
  2. 2.65 × 50 =
  3. 3.37 × 5 =
  4. 4.39 × 5 =
  5. 5.67 × 50 =
  6. 6.66 × 50 =
  7. 7.90 × 50 =
  8. 8.30 × 5 =
  9. 9.16 × 5 =
  10. 10.47 × 50 =
  11. 11.40 × 5 =
  12. 12.83 × 5 =
  13. 13.47 × 50 =
  14. 14.23 × 5 =
  15. 15.12 × 50 =
  16. 16.81 × 5 =
  17. 17.43 × 50 =
  18. 18.87 × 50 =
  19. 19.90 × 50 =
  20. 20.60 × 5 =
  21. 21.16 × 50 =
  22. 22.88 × 50 =
  23. 23.66 × 5 =
  24. 24.12 × 50 =
  25. 25.23 × 5 =
  26. 26.94 × 5 =
  27. 27.26 × 50 =
  28. 28.92 × 5 =
  29. 29.51 × 5 =
  30. 30.52 × 50 =
  31. 31.80 × 50 =
  32. 32.43 × 50 =
  33. 33.90 × 50 =
  34. 34.17 × 50 =
  35. 35.42 × 5 =
  36. 36.90 × 50 =
  37. 37.15 × 5 =
  38. 38.23 × 5 =
  39. 39.94 × 50 =
  40. 40.59 × 50 =

Answer key

  1. 180
  2. 3250
  3. 185
  4. 195
  5. 3350
  6. 3300
  7. 4500
  8. 150
  9. 80
  10. 2350
  11. 200
  12. 415
  13. 2350
  14. 115
  15. 600
  16. 405
  17. 2150
  18. 4350
  19. 4500
  20. 300
  21. 800
  22. 4400
  23. 330
  24. 600
  25. 115
  26. 470
  27. 1300
  28. 460
  29. 255
  30. 2600
  31. 4000
  32. 2150
  33. 4500
  34. 850
  35. 210
  36. 4500
  37. 75
  38. 115
  39. 4700
  40. 2950

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