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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 349 · 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. 1.37 × 50 =
  2. 2.64 × 50 =
  3. 3.29 × 50 =
  4. 4.39 × 50 =
  5. 5.25 × 50 =
  6. 6.52 × 50 =
  7. 7.24 × 5 =
  8. 8.93 × 5 =
  9. 9.36 × 50 =
  10. 10.35 × 5 =
  11. 11.92 × 50 =
  12. 12.35 × 5 =
  13. 13.70 × 50 =
  14. 14.18 × 50 =
  15. 15.76 × 5 =
  16. 16.26 × 5 =
  17. 17.68 × 5 =
  18. 18.63 × 50 =
  19. 19.66 × 50 =
  20. 20.53 × 50 =
  21. 21.24 × 5 =
  22. 22.67 × 5 =
  23. 23.17 × 5 =
  24. 24.80 × 50 =
  25. 25.32 × 50 =
  26. 26.38 × 5 =
  27. 27.56 × 50 =
  28. 28.57 × 50 =
  29. 29.55 × 5 =
  30. 30.12 × 50 =
  31. 31.15 × 50 =
  32. 32.93 × 5 =
  33. 33.85 × 5 =
  34. 34.83 × 5 =
  35. 35.58 × 50 =
  36. 36.67 × 5 =
  37. 37.28 × 5 =
  38. 38.89 × 5 =
  39. 39.64 × 5 =
  40. 40.72 × 5 =

Answer key

  1. 1850
  2. 3200
  3. 1450
  4. 1950
  5. 1250
  6. 2600
  7. 120
  8. 465
  9. 1800
  10. 175
  11. 4600
  12. 175
  13. 3500
  14. 900
  15. 380
  16. 130
  17. 340
  18. 3150
  19. 3300
  20. 2650
  21. 120
  22. 335
  23. 85
  24. 4000
  25. 1600
  26. 190
  27. 2800
  28. 2850
  29. 275
  30. 600
  31. 750
  32. 465
  33. 425
  34. 415
  35. 2900
  36. 335
  37. 140
  38. 445
  39. 320
  40. 360

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