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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 295 · 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. 1.34 × 50 =
  2. 2.64 × 5 =
  3. 3.46 × 5 =
  4. 4.13 × 50 =
  5. 5.24 × 50 =
  6. 6.67 × 5 =
  7. 7.39 × 50 =
  8. 8.95 × 50 =
  9. 9.21 × 5 =
  10. 10.24 × 5 =
  11. 11.22 × 50 =
  12. 12.65 × 50 =
  13. 13.14 × 50 =
  14. 14.84 × 5 =
  15. 15.79 × 5 =
  16. 16.94 × 50 =
  17. 17.30 × 5 =
  18. 18.97 × 5 =
  19. 19.30 × 50 =
  20. 20.46 × 5 =
  21. 21.83 × 5 =
  22. 22.84 × 5 =
  23. 23.39 × 5 =
  24. 24.84 × 5 =
  25. 25.43 × 5 =
  26. 26.21 × 50 =
  27. 27.60 × 5 =
  28. 28.88 × 5 =
  29. 29.35 × 50 =
  30. 30.42 × 5 =
  31. 31.14 × 50 =
  32. 32.57 × 50 =
  33. 33.53 × 5 =
  34. 34.87 × 50 =
  35. 35.83 × 5 =
  36. 36.80 × 50 =
  37. 37.48 × 5 =
  38. 38.44 × 50 =
  39. 39.40 × 50 =
  40. 40.73 × 50 =

Answer key

  1. 1700
  2. 320
  3. 230
  4. 650
  5. 1200
  6. 335
  7. 1950
  8. 4750
  9. 105
  10. 120
  11. 1100
  12. 3250
  13. 700
  14. 420
  15. 395
  16. 4700
  17. 150
  18. 485
  19. 1500
  20. 230
  21. 415
  22. 420
  23. 195
  24. 420
  25. 215
  26. 1050
  27. 300
  28. 440
  29. 1750
  30. 210
  31. 700
  32. 2850
  33. 265
  34. 4350
  35. 415
  36. 4000
  37. 240
  38. 2200
  39. 2000
  40. 3650

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