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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 2 · 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. 1.41 × 50 =
  2. 2.25 × 5 =
  3. 3.26 × 50 =
  4. 4.21 × 5 =
  5. 5.81 × 50 =
  6. 6.31 × 5 =
  7. 7.56 × 5 =
  8. 8.34 × 50 =
  9. 9.79 × 5 =
  10. 10.61 × 50 =
  11. 11.60 × 5 =
  12. 12.90 × 50 =
  13. 13.29 × 50 =
  14. 14.35 × 5 =
  15. 15.16 × 50 =
  16. 16.22 × 5 =
  17. 17.19 × 50 =
  18. 18.27 × 50 =
  19. 19.78 × 5 =
  20. 20.40 × 5 =
  21. 21.55 × 50 =
  22. 22.81 × 5 =
  23. 23.36 × 5 =
  24. 24.55 × 5 =
  25. 25.56 × 5 =
  26. 26.18 × 5 =
  27. 27.56 × 5 =
  28. 28.28 × 50 =
  29. 29.40 × 5 =
  30. 30.29 × 5 =
  31. 31.71 × 50 =
  32. 32.45 × 5 =
  33. 33.24 × 50 =
  34. 34.74 × 50 =
  35. 35.49 × 50 =
  36. 36.21 × 5 =
  37. 37.22 × 50 =
  38. 38.69 × 50 =
  39. 39.92 × 5 =
  40. 40.57 × 5 =

Answer key

  1. 2050
  2. 125
  3. 1300
  4. 105
  5. 4050
  6. 155
  7. 280
  8. 1700
  9. 395
  10. 3050
  11. 300
  12. 4500
  13. 1450
  14. 175
  15. 800
  16. 110
  17. 950
  18. 1350
  19. 390
  20. 200
  21. 2750
  22. 405
  23. 180
  24. 275
  25. 280
  26. 90
  27. 280
  28. 1400
  29. 200
  30. 145
  31. 3550
  32. 225
  33. 1200
  34. 3700
  35. 2450
  36. 105
  37. 1100
  38. 3450
  39. 460
  40. 285

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