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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 641 · 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. 1.20 × 50 =
  2. 2.24 × 50 =
  3. 3.92 × 5 =
  4. 4.69 × 50 =
  5. 5.38 × 5 =
  6. 6.82 × 50 =
  7. 7.49 × 50 =
  8. 8.88 × 50 =
  9. 9.30 × 50 =
  10. 10.91 × 5 =
  11. 11.60 × 50 =
  12. 12.85 × 5 =
  13. 13.30 × 5 =
  14. 14.55 × 5 =
  15. 15.44 × 50 =
  16. 16.50 × 5 =
  17. 17.66 × 50 =
  18. 18.82 × 50 =
  19. 19.46 × 5 =
  20. 20.16 × 5 =
  21. 21.45 × 50 =
  22. 22.42 × 5 =
  23. 23.56 × 5 =
  24. 24.38 × 50 =
  25. 25.51 × 5 =
  26. 26.72 × 5 =
  27. 27.75 × 5 =
  28. 28.75 × 5 =
  29. 29.44 × 5 =
  30. 30.37 × 50 =
  31. 31.79 × 5 =
  32. 32.17 × 5 =
  33. 33.12 × 5 =
  34. 34.76 × 5 =
  35. 35.60 × 50 =
  36. 36.74 × 50 =
  37. 37.89 × 5 =
  38. 38.83 × 5 =
  39. 39.59 × 50 =
  40. 40.71 × 50 =

Answer key

  1. 1000
  2. 1200
  3. 460
  4. 3450
  5. 190
  6. 4100
  7. 2450
  8. 4400
  9. 1500
  10. 455
  11. 3000
  12. 425
  13. 150
  14. 275
  15. 2200
  16. 250
  17. 3300
  18. 4100
  19. 230
  20. 80
  21. 2250
  22. 210
  23. 280
  24. 1900
  25. 255
  26. 360
  27. 375
  28. 375
  29. 220
  30. 1850
  31. 395
  32. 85
  33. 60
  34. 380
  35. 3000
  36. 3700
  37. 445
  38. 415
  39. 2950
  40. 3550

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