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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 657 · 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. 1.93 × 50 =
  2. 2.71 × 5 =
  3. 3.60 × 50 =
  4. 4.38 × 5 =
  5. 5.16 × 5 =
  6. 6.28 × 5 =
  7. 7.21 × 50 =
  8. 8.29 × 5 =
  9. 9.85 × 50 =
  10. 10.15 × 5 =
  11. 11.64 × 50 =
  12. 12.50 × 5 =
  13. 13.43 × 5 =
  14. 14.34 × 50 =
  15. 15.47 × 5 =
  16. 16.87 × 50 =
  17. 17.96 × 50 =
  18. 18.59 × 5 =
  19. 19.58 × 5 =
  20. 20.97 × 5 =
  21. 21.23 × 50 =
  22. 22.90 × 5 =
  23. 23.18 × 5 =
  24. 24.21 × 5 =
  25. 25.27 × 50 =
  26. 26.29 × 50 =
  27. 27.18 × 5 =
  28. 28.72 × 50 =
  29. 29.35 × 5 =
  30. 30.64 × 50 =
  31. 31.34 × 5 =
  32. 32.16 × 50 =
  33. 33.85 × 5 =
  34. 34.89 × 5 =
  35. 35.13 × 50 =
  36. 36.97 × 50 =
  37. 37.68 × 50 =
  38. 38.62 × 50 =
  39. 39.26 × 50 =
  40. 40.17 × 5 =

Answer key

  1. 4650
  2. 355
  3. 3000
  4. 190
  5. 80
  6. 140
  7. 1050
  8. 145
  9. 4250
  10. 75
  11. 3200
  12. 250
  13. 215
  14. 1700
  15. 235
  16. 4350
  17. 4800
  18. 295
  19. 290
  20. 485
  21. 1150
  22. 450
  23. 90
  24. 105
  25. 1350
  26. 1450
  27. 90
  28. 3600
  29. 175
  30. 3200
  31. 170
  32. 800
  33. 425
  34. 445
  35. 650
  36. 4850
  37. 3400
  38. 3100
  39. 1300
  40. 85

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