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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 640 · 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. 1.65 × 50 =
  2. 2.66 × 5 =
  3. 3.90 × 50 =
  4. 4.23 × 50 =
  5. 5.88 × 50 =
  6. 6.56 × 50 =
  7. 7.23 × 50 =
  8. 8.19 × 5 =
  9. 9.89 × 5 =
  10. 10.22 × 5 =
  11. 11.59 × 50 =
  12. 12.85 × 5 =
  13. 13.45 × 50 =
  14. 14.87 × 50 =
  15. 15.13 × 5 =
  16. 16.98 × 5 =
  17. 17.49 × 50 =
  18. 18.15 × 5 =
  19. 19.49 × 50 =
  20. 20.34 × 5 =
  21. 21.17 × 50 =
  22. 22.98 × 50 =
  23. 23.79 × 5 =
  24. 24.54 × 5 =
  25. 25.15 × 50 =
  26. 26.22 × 5 =
  27. 27.94 × 5 =
  28. 28.33 × 5 =
  29. 29.26 × 50 =
  30. 30.60 × 5 =
  31. 31.96 × 5 =
  32. 32.73 × 5 =
  33. 33.26 × 5 =
  34. 34.47 × 5 =
  35. 35.76 × 50 =
  36. 36.41 × 5 =
  37. 37.45 × 5 =
  38. 38.90 × 50 =
  39. 39.56 × 5 =
  40. 40.87 × 50 =

Answer key

  1. 3250
  2. 330
  3. 4500
  4. 1150
  5. 4400
  6. 2800
  7. 1150
  8. 95
  9. 445
  10. 110
  11. 2950
  12. 425
  13. 2250
  14. 4350
  15. 65
  16. 490
  17. 2450
  18. 75
  19. 2450
  20. 170
  21. 850
  22. 4900
  23. 395
  24. 270
  25. 750
  26. 110
  27. 470
  28. 165
  29. 1300
  30. 300
  31. 480
  32. 365
  33. 130
  34. 235
  35. 3800
  36. 205
  37. 225
  38. 4500
  39. 280
  40. 4350

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