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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 288 · 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. 1.66 × 50 =
  2. 2.30 × 5 =
  3. 3.67 × 50 =
  4. 4.15 × 50 =
  5. 5.30 × 5 =
  6. 6.74 × 5 =
  7. 7.39 × 5 =
  8. 8.35 × 5 =
  9. 9.61 × 50 =
  10. 10.92 × 50 =
  11. 11.23 × 50 =
  12. 12.92 × 50 =
  13. 13.91 × 50 =
  14. 14.14 × 5 =
  15. 15.35 × 50 =
  16. 16.75 × 5 =
  17. 17.86 × 50 =
  18. 18.82 × 5 =
  19. 19.28 × 50 =
  20. 20.83 × 50 =
  21. 21.23 × 50 =
  22. 22.13 × 5 =
  23. 23.59 × 50 =
  24. 24.44 × 50 =
  25. 25.13 × 5 =
  26. 26.95 × 5 =
  27. 27.17 × 50 =
  28. 28.60 × 5 =
  29. 29.22 × 5 =
  30. 30.67 × 50 =
  31. 31.58 × 50 =
  32. 32.83 × 5 =
  33. 33.98 × 50 =
  34. 34.36 × 5 =
  35. 35.41 × 50 =
  36. 36.27 × 5 =
  37. 37.37 × 50 =
  38. 38.40 × 50 =
  39. 39.66 × 5 =
  40. 40.39 × 5 =

Answer key

  1. 3300
  2. 150
  3. 3350
  4. 750
  5. 150
  6. 370
  7. 195
  8. 175
  9. 3050
  10. 4600
  11. 1150
  12. 4600
  13. 4550
  14. 70
  15. 1750
  16. 375
  17. 4300
  18. 410
  19. 1400
  20. 4150
  21. 1150
  22. 65
  23. 2950
  24. 2200
  25. 65
  26. 475
  27. 850
  28. 300
  29. 110
  30. 3350
  31. 2900
  32. 415
  33. 4900
  34. 180
  35. 2050
  36. 135
  37. 1850
  38. 2000
  39. 330
  40. 195

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