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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 619 · 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 × 50 =
  2. 2.96 × 50 =
  3. 3.16 × 5 =
  4. 4.79 × 50 =
  5. 5.49 × 5 =
  6. 6.96 × 50 =
  7. 7.24 × 5 =
  8. 8.28 × 5 =
  9. 9.30 × 5 =
  10. 10.61 × 50 =
  11. 11.87 × 50 =
  12. 12.66 × 50 =
  13. 13.14 × 50 =
  14. 14.39 × 5 =
  15. 15.53 × 5 =
  16. 16.62 × 50 =
  17. 17.97 × 5 =
  18. 18.24 × 5 =
  19. 19.75 × 5 =
  20. 20.22 × 5 =
  21. 21.72 × 5 =
  22. 22.89 × 50 =
  23. 23.26 × 50 =
  24. 24.14 × 50 =
  25. 25.93 × 50 =
  26. 26.86 × 5 =
  27. 27.58 × 50 =
  28. 28.47 × 50 =
  29. 29.20 × 50 =
  30. 30.56 × 50 =
  31. 31.62 × 50 =
  32. 32.33 × 5 =
  33. 33.26 × 5 =
  34. 34.33 × 50 =
  35. 35.55 × 50 =
  36. 36.64 × 5 =
  37. 37.97 × 50 =
  38. 38.28 × 5 =
  39. 39.12 × 50 =
  40. 40.31 × 5 =

Answer key

  1. 1800
  2. 4800
  3. 80
  4. 3950
  5. 245
  6. 4800
  7. 120
  8. 140
  9. 150
  10. 3050
  11. 4350
  12. 3300
  13. 700
  14. 195
  15. 265
  16. 3100
  17. 485
  18. 120
  19. 375
  20. 110
  21. 360
  22. 4450
  23. 1300
  24. 700
  25. 4650
  26. 430
  27. 2900
  28. 2350
  29. 1000
  30. 2800
  31. 3100
  32. 165
  33. 130
  34. 1650
  35. 2750
  36. 320
  37. 4850
  38. 140
  39. 600
  40. 155

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