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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 568 · 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. 1.53 × 50 =
  2. 2.60 × 5 =
  3. 3.43 × 5 =
  4. 4.36 × 5 =
  5. 5.52 × 50 =
  6. 6.58 × 50 =
  7. 7.67 × 50 =
  8. 8.45 × 5 =
  9. 9.18 × 50 =
  10. 10.33 × 5 =
  11. 11.90 × 5 =
  12. 12.89 × 5 =
  13. 13.73 × 50 =
  14. 14.72 × 50 =
  15. 15.68 × 5 =
  16. 16.89 × 50 =
  17. 17.51 × 50 =
  18. 18.94 × 5 =
  19. 19.89 × 5 =
  20. 20.85 × 5 =
  21. 21.79 × 50 =
  22. 22.43 × 5 =
  23. 23.36 × 5 =
  24. 24.14 × 5 =
  25. 25.28 × 5 =
  26. 26.80 × 5 =
  27. 27.35 × 50 =
  28. 28.68 × 5 =
  29. 29.14 × 5 =
  30. 30.32 × 5 =
  31. 31.90 × 5 =
  32. 32.34 × 50 =
  33. 33.26 × 50 =
  34. 34.17 × 5 =
  35. 35.24 × 50 =
  36. 36.69 × 50 =
  37. 37.66 × 50 =
  38. 38.46 × 50 =
  39. 39.41 × 5 =
  40. 40.59 × 5 =

Answer key

  1. 2650
  2. 300
  3. 215
  4. 180
  5. 2600
  6. 2900
  7. 3350
  8. 225
  9. 900
  10. 165
  11. 450
  12. 445
  13. 3650
  14. 3600
  15. 340
  16. 4450
  17. 2550
  18. 470
  19. 445
  20. 425
  21. 3950
  22. 215
  23. 180
  24. 70
  25. 140
  26. 400
  27. 1750
  28. 340
  29. 70
  30. 160
  31. 450
  32. 1700
  33. 1300
  34. 85
  35. 1200
  36. 3450
  37. 3300
  38. 2300
  39. 205
  40. 295

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