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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 576 · 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. 1.77 × 50 =
  2. 2.12 × 50 =
  3. 3.26 × 50 =
  4. 4.45 × 50 =
  5. 5.39 × 50 =
  6. 6.82 × 50 =
  7. 7.26 × 5 =
  8. 8.80 × 5 =
  9. 9.66 × 50 =
  10. 10.61 × 50 =
  11. 11.35 × 50 =
  12. 12.36 × 5 =
  13. 13.58 × 50 =
  14. 14.29 × 5 =
  15. 15.58 × 50 =
  16. 16.22 × 5 =
  17. 17.88 × 50 =
  18. 18.88 × 50 =
  19. 19.39 × 50 =
  20. 20.62 × 50 =
  21. 21.56 × 5 =
  22. 22.28 × 50 =
  23. 23.46 × 50 =
  24. 24.91 × 5 =
  25. 25.58 × 50 =
  26. 26.40 × 5 =
  27. 27.13 × 5 =
  28. 28.79 × 5 =
  29. 29.92 × 50 =
  30. 30.68 × 5 =
  31. 31.24 × 50 =
  32. 32.87 × 50 =
  33. 33.52 × 50 =
  34. 34.31 × 50 =
  35. 35.23 × 5 =
  36. 36.76 × 50 =
  37. 37.95 × 5 =
  38. 38.78 × 5 =
  39. 39.15 × 5 =
  40. 40.95 × 50 =

Answer key

  1. 3850
  2. 600
  3. 1300
  4. 2250
  5. 1950
  6. 4100
  7. 130
  8. 400
  9. 3300
  10. 3050
  11. 1750
  12. 180
  13. 2900
  14. 145
  15. 2900
  16. 110
  17. 4400
  18. 4400
  19. 1950
  20. 3100
  21. 280
  22. 1400
  23. 2300
  24. 455
  25. 2900
  26. 200
  27. 65
  28. 395
  29. 4600
  30. 340
  31. 1200
  32. 4350
  33. 2600
  34. 1550
  35. 115
  36. 3800
  37. 475
  38. 390
  39. 75
  40. 4750

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