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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 275 · 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. 1.34 × 50 =
  2. 2.13 × 5 =
  3. 3.72 × 50 =
  4. 4.37 × 5 =
  5. 5.61 × 50 =
  6. 6.97 × 50 =
  7. 7.81 × 5 =
  8. 8.22 × 5 =
  9. 9.44 × 50 =
  10. 10.58 × 5 =
  11. 11.89 × 50 =
  12. 12.29 × 5 =
  13. 13.65 × 50 =
  14. 14.20 × 5 =
  15. 15.23 × 50 =
  16. 16.82 × 50 =
  17. 17.13 × 50 =
  18. 18.85 × 5 =
  19. 19.22 × 5 =
  20. 20.22 × 50 =
  21. 21.65 × 50 =
  22. 22.72 × 50 =
  23. 23.47 × 50 =
  24. 24.19 × 50 =
  25. 25.31 × 5 =
  26. 26.38 × 5 =
  27. 27.88 × 50 =
  28. 28.76 × 50 =
  29. 29.24 × 5 =
  30. 30.26 × 5 =
  31. 31.44 × 50 =
  32. 32.37 × 5 =
  33. 33.97 × 5 =
  34. 34.14 × 5 =
  35. 35.68 × 50 =
  36. 36.12 × 5 =
  37. 37.65 × 50 =
  38. 38.83 × 50 =
  39. 39.47 × 5 =
  40. 40.52 × 50 =

Answer key

  1. 1700
  2. 65
  3. 3600
  4. 185
  5. 3050
  6. 4850
  7. 405
  8. 110
  9. 2200
  10. 290
  11. 4450
  12. 145
  13. 3250
  14. 100
  15. 1150
  16. 4100
  17. 650
  18. 425
  19. 110
  20. 1100
  21. 3250
  22. 3600
  23. 2350
  24. 950
  25. 155
  26. 190
  27. 4400
  28. 3800
  29. 120
  30. 130
  31. 2200
  32. 185
  33. 485
  34. 70
  35. 3400
  36. 60
  37. 3250
  38. 4150
  39. 235
  40. 2600

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