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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 666 · 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. 1.45 × 5 =
  2. 2.26 × 50 =
  3. 3.68 × 50 =
  4. 4.82 × 5 =
  5. 5.37 × 50 =
  6. 6.28 × 5 =
  7. 7.81 × 5 =
  8. 8.33 × 5 =
  9. 9.93 × 5 =
  10. 10.44 × 5 =
  11. 11.22 × 50 =
  12. 12.26 × 5 =
  13. 13.60 × 50 =
  14. 14.19 × 50 =
  15. 15.30 × 50 =
  16. 16.78 × 5 =
  17. 17.96 × 5 =
  18. 18.97 × 5 =
  19. 19.18 × 50 =
  20. 20.37 × 50 =
  21. 21.63 × 5 =
  22. 22.24 × 5 =
  23. 23.32 × 5 =
  24. 24.47 × 50 =
  25. 25.23 × 50 =
  26. 26.72 × 5 =
  27. 27.57 × 5 =
  28. 28.45 × 5 =
  29. 29.68 × 50 =
  30. 30.36 × 50 =
  31. 31.85 × 50 =
  32. 32.48 × 5 =
  33. 33.62 × 50 =
  34. 34.17 × 5 =
  35. 35.25 × 5 =
  36. 36.31 × 50 =
  37. 37.16 × 5 =
  38. 38.94 × 5 =
  39. 39.85 × 5 =
  40. 40.17 × 50 =

Answer key

  1. 225
  2. 1300
  3. 3400
  4. 410
  5. 1850
  6. 140
  7. 405
  8. 165
  9. 465
  10. 220
  11. 1100
  12. 130
  13. 3000
  14. 950
  15. 1500
  16. 390
  17. 480
  18. 485
  19. 900
  20. 1850
  21. 315
  22. 120
  23. 160
  24. 2350
  25. 1150
  26. 360
  27. 285
  28. 225
  29. 3400
  30. 1800
  31. 4250
  32. 240
  33. 3100
  34. 85
  35. 125
  36. 1550
  37. 80
  38. 470
  39. 425
  40. 850

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