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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 282 · 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. 1.25 × 5 =
  2. 2.57 × 5 =
  3. 3.73 × 50 =
  4. 4.62 × 5 =
  5. 5.16 × 5 =
  6. 6.80 × 5 =
  7. 7.30 × 5 =
  8. 8.46 × 5 =
  9. 9.12 × 5 =
  10. 10.84 × 5 =
  11. 11.25 × 50 =
  12. 12.41 × 5 =
  13. 13.34 × 50 =
  14. 14.76 × 50 =
  15. 15.39 × 5 =
  16. 16.62 × 50 =
  17. 17.12 × 5 =
  18. 18.42 × 5 =
  19. 19.92 × 5 =
  20. 20.32 × 5 =
  21. 21.72 × 50 =
  22. 22.88 × 50 =
  23. 23.38 × 5 =
  24. 24.86 × 5 =
  25. 25.51 × 5 =
  26. 26.60 × 50 =
  27. 27.28 × 5 =
  28. 28.85 × 5 =
  29. 29.24 × 50 =
  30. 30.57 × 50 =
  31. 31.48 × 50 =
  32. 32.87 × 5 =
  33. 33.69 × 5 =
  34. 34.15 × 50 =
  35. 35.82 × 50 =
  36. 36.19 × 5 =
  37. 37.31 × 5 =
  38. 38.50 × 5 =
  39. 39.38 × 50 =
  40. 40.92 × 5 =

Answer key

  1. 125
  2. 285
  3. 3650
  4. 310
  5. 80
  6. 400
  7. 150
  8. 230
  9. 60
  10. 420
  11. 1250
  12. 205
  13. 1700
  14. 3800
  15. 195
  16. 3100
  17. 60
  18. 210
  19. 460
  20. 160
  21. 3600
  22. 4400
  23. 190
  24. 430
  25. 255
  26. 3000
  27. 140
  28. 425
  29. 1200
  30. 2850
  31. 2400
  32. 435
  33. 345
  34. 750
  35. 4100
  36. 95
  37. 155
  38. 250
  39. 1900
  40. 460

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