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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 585 · 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. 1.56 × 50 =
  2. 2.88 × 5 =
  3. 3.30 × 5 =
  4. 4.75 × 50 =
  5. 5.71 × 5 =
  6. 6.84 × 5 =
  7. 7.30 × 50 =
  8. 8.24 × 50 =
  9. 9.92 × 50 =
  10. 10.66 × 5 =
  11. 11.38 × 50 =
  12. 12.28 × 5 =
  13. 13.78 × 5 =
  14. 14.46 × 50 =
  15. 15.92 × 50 =
  16. 16.68 × 50 =
  17. 17.46 × 50 =
  18. 18.34 × 5 =
  19. 19.18 × 50 =
  20. 20.87 × 5 =
  21. 21.50 × 50 =
  22. 22.19 × 50 =
  23. 23.54 × 50 =
  24. 24.79 × 5 =
  25. 25.21 × 50 =
  26. 26.59 × 5 =
  27. 27.22 × 50 =
  28. 28.94 × 5 =
  29. 29.81 × 5 =
  30. 30.29 × 5 =
  31. 31.67 × 50 =
  32. 32.26 × 5 =
  33. 33.67 × 5 =
  34. 34.13 × 5 =
  35. 35.17 × 50 =
  36. 36.22 × 5 =
  37. 37.38 × 5 =
  38. 38.42 × 5 =
  39. 39.14 × 5 =
  40. 40.58 × 5 =

Answer key

  1. 2800
  2. 440
  3. 150
  4. 3750
  5. 355
  6. 420
  7. 1500
  8. 1200
  9. 4600
  10. 330
  11. 1900
  12. 140
  13. 390
  14. 2300
  15. 4600
  16. 3400
  17. 2300
  18. 170
  19. 900
  20. 435
  21. 2500
  22. 950
  23. 2700
  24. 395
  25. 1050
  26. 295
  27. 1100
  28. 470
  29. 405
  30. 145
  31. 3350
  32. 130
  33. 335
  34. 65
  35. 850
  36. 110
  37. 190
  38. 210
  39. 70
  40. 290

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