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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 512 · 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. 1.15 × 5 =
  2. 2.45 × 5 =
  3. 3.23 × 50 =
  4. 4.20 × 50 =
  5. 5.66 × 50 =
  6. 6.69 × 50 =
  7. 7.59 × 50 =
  8. 8.89 × 5 =
  9. 9.51 × 5 =
  10. 10.38 × 50 =
  11. 11.90 × 50 =
  12. 12.37 × 5 =
  13. 13.12 × 50 =
  14. 14.82 × 5 =
  15. 15.34 × 5 =
  16. 16.91 × 5 =
  17. 17.26 × 5 =
  18. 18.43 × 50 =
  19. 19.74 × 50 =
  20. 20.19 × 5 =
  21. 21.36 × 5 =
  22. 22.70 × 50 =
  23. 23.18 × 5 =
  24. 24.13 × 5 =
  25. 25.27 × 50 =
  26. 26.64 × 50 =
  27. 27.32 × 5 =
  28. 28.20 × 5 =
  29. 29.73 × 50 =
  30. 30.34 × 50 =
  31. 31.93 × 50 =
  32. 32.30 × 5 =
  33. 33.75 × 5 =
  34. 34.56 × 50 =
  35. 35.65 × 5 =
  36. 36.38 × 50 =
  37. 37.36 × 5 =
  38. 38.56 × 5 =
  39. 39.72 × 5 =
  40. 40.58 × 5 =

Answer key

  1. 75
  2. 225
  3. 1150
  4. 1000
  5. 3300
  6. 3450
  7. 2950
  8. 445
  9. 255
  10. 1900
  11. 4500
  12. 185
  13. 600
  14. 410
  15. 170
  16. 455
  17. 130
  18. 2150
  19. 3700
  20. 95
  21. 180
  22. 3500
  23. 90
  24. 65
  25. 1350
  26. 3200
  27. 160
  28. 100
  29. 3650
  30. 1700
  31. 4650
  32. 150
  33. 375
  34. 2800
  35. 325
  36. 1900
  37. 180
  38. 280
  39. 360
  40. 290

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