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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 582 · 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 × 5 =
  2. 2.93 × 50 =
  3. 3.42 × 5 =
  4. 4.43 × 50 =
  5. 5.33 × 50 =
  6. 6.53 × 50 =
  7. 7.13 × 50 =
  8. 8.98 × 50 =
  9. 9.56 × 5 =
  10. 10.24 × 50 =
  11. 11.53 × 5 =
  12. 12.41 × 5 =
  13. 13.94 × 5 =
  14. 14.28 × 50 =
  15. 15.27 × 50 =
  16. 16.97 × 50 =
  17. 17.26 × 50 =
  18. 18.85 × 5 =
  19. 19.38 × 50 =
  20. 20.14 × 5 =
  21. 21.54 × 5 =
  22. 22.88 × 50 =
  23. 23.58 × 50 =
  24. 24.35 × 5 =
  25. 25.71 × 50 =
  26. 26.16 × 50 =
  27. 27.71 × 50 =
  28. 28.21 × 5 =
  29. 29.41 × 50 =
  30. 30.22 × 50 =
  31. 31.53 × 5 =
  32. 32.22 × 50 =
  33. 33.91 × 50 =
  34. 34.54 × 50 =
  35. 35.34 × 5 =
  36. 36.56 × 50 =
  37. 37.37 × 50 =
  38. 38.68 × 50 =
  39. 39.50 × 5 =
  40. 40.80 × 5 =

Answer key

  1. 180
  2. 4650
  3. 210
  4. 2150
  5. 1650
  6. 2650
  7. 650
  8. 4900
  9. 280
  10. 1200
  11. 265
  12. 205
  13. 470
  14. 1400
  15. 1350
  16. 4850
  17. 1300
  18. 425
  19. 1900
  20. 70
  21. 270
  22. 4400
  23. 2900
  24. 175
  25. 3550
  26. 800
  27. 3550
  28. 105
  29. 2050
  30. 1100
  31. 265
  32. 1100
  33. 4550
  34. 2700
  35. 170
  36. 2800
  37. 1850
  38. 3400
  39. 250
  40. 400

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