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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 132 · 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. 1.37 × 50 =
  2. 2.56 × 5 =
  3. 3.58 × 50 =
  4. 4.72 × 50 =
  5. 5.41 × 50 =
  6. 6.49 × 50 =
  7. 7.19 × 50 =
  8. 8.22 × 5 =
  9. 9.24 × 5 =
  10. 10.54 × 5 =
  11. 11.15 × 50 =
  12. 12.39 × 5 =
  13. 13.58 × 5 =
  14. 14.84 × 50 =
  15. 15.23 × 5 =
  16. 16.33 × 5 =
  17. 17.26 × 5 =
  18. 18.45 × 50 =
  19. 19.30 × 5 =
  20. 20.51 × 5 =
  21. 21.97 × 50 =
  22. 22.12 × 5 =
  23. 23.39 × 5 =
  24. 24.46 × 50 =
  25. 25.25 × 50 =
  26. 26.73 × 5 =
  27. 27.90 × 50 =
  28. 28.82 × 50 =
  29. 29.45 × 5 =
  30. 30.45 × 50 =
  31. 31.12 × 50 =
  32. 32.49 × 50 =
  33. 33.65 × 50 =
  34. 34.21 × 5 =
  35. 35.81 × 50 =
  36. 36.31 × 5 =
  37. 37.39 × 5 =
  38. 38.21 × 50 =
  39. 39.30 × 5 =
  40. 40.33 × 50 =

Answer key

  1. 1850
  2. 280
  3. 2900
  4. 3600
  5. 2050
  6. 2450
  7. 950
  8. 110
  9. 120
  10. 270
  11. 750
  12. 195
  13. 290
  14. 4200
  15. 115
  16. 165
  17. 130
  18. 2250
  19. 150
  20. 255
  21. 4850
  22. 60
  23. 195
  24. 2300
  25. 1250
  26. 365
  27. 4500
  28. 4100
  29. 225
  30. 2250
  31. 600
  32. 2450
  33. 3250
  34. 105
  35. 4050
  36. 155
  37. 195
  38. 1050
  39. 150
  40. 1650

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