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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 614 · 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. 1.31 × 50 =
  2. 2.45 × 5 =
  3. 3.33 × 50 =
  4. 4.32 × 50 =
  5. 5.83 × 5 =
  6. 6.49 × 50 =
  7. 7.95 × 5 =
  8. 8.29 × 5 =
  9. 9.60 × 50 =
  10. 10.29 × 5 =
  11. 11.41 × 5 =
  12. 12.69 × 50 =
  13. 13.75 × 50 =
  14. 14.26 × 50 =
  15. 15.59 × 50 =
  16. 16.48 × 5 =
  17. 17.62 × 50 =
  18. 18.20 × 50 =
  19. 19.97 × 5 =
  20. 20.54 × 5 =
  21. 21.55 × 50 =
  22. 22.93 × 50 =
  23. 23.41 × 50 =
  24. 24.98 × 50 =
  25. 25.67 × 50 =
  26. 26.30 × 5 =
  27. 27.35 × 5 =
  28. 28.20 × 50 =
  29. 29.78 × 5 =
  30. 30.60 × 5 =
  31. 31.13 × 5 =
  32. 32.98 × 50 =
  33. 33.86 × 50 =
  34. 34.48 × 5 =
  35. 35.50 × 5 =
  36. 36.15 × 5 =
  37. 37.90 × 50 =
  38. 38.32 × 50 =
  39. 39.42 × 5 =
  40. 40.96 × 5 =

Answer key

  1. 1550
  2. 225
  3. 1650
  4. 1600
  5. 415
  6. 2450
  7. 475
  8. 145
  9. 3000
  10. 145
  11. 205
  12. 3450
  13. 3750
  14. 1300
  15. 2950
  16. 240
  17. 3100
  18. 1000
  19. 485
  20. 270
  21. 2750
  22. 4650
  23. 2050
  24. 4900
  25. 3350
  26. 150
  27. 175
  28. 1000
  29. 390
  30. 300
  31. 65
  32. 4900
  33. 4300
  34. 240
  35. 250
  36. 75
  37. 4500
  38. 1600
  39. 210
  40. 480

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