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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 491 · 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. 1.16 × 50 =
  2. 2.64 × 50 =
  3. 3.75 × 5 =
  4. 4.28 × 50 =
  5. 5.46 × 5 =
  6. 6.27 × 50 =
  7. 7.53 × 5 =
  8. 8.43 × 5 =
  9. 9.14 × 5 =
  10. 10.34 × 5 =
  11. 11.91 × 5 =
  12. 12.16 × 50 =
  13. 13.77 × 5 =
  14. 14.88 × 5 =
  15. 15.16 × 5 =
  16. 16.85 × 5 =
  17. 17.19 × 5 =
  18. 18.78 × 50 =
  19. 19.47 × 50 =
  20. 20.32 × 50 =
  21. 21.89 × 5 =
  22. 22.18 × 5 =
  23. 23.54 × 50 =
  24. 24.42 × 5 =
  25. 25.34 × 5 =
  26. 26.22 × 5 =
  27. 27.93 × 5 =
  28. 28.39 × 5 =
  29. 29.83 × 50 =
  30. 30.33 × 50 =
  31. 31.17 × 50 =
  32. 32.25 × 50 =
  33. 33.61 × 50 =
  34. 34.20 × 50 =
  35. 35.47 × 50 =
  36. 36.16 × 5 =
  37. 37.23 × 50 =
  38. 38.26 × 5 =
  39. 39.17 × 5 =
  40. 40.23 × 50 =

Answer key

  1. 800
  2. 3200
  3. 375
  4. 1400
  5. 230
  6. 1350
  7. 265
  8. 215
  9. 70
  10. 170
  11. 455
  12. 800
  13. 385
  14. 440
  15. 80
  16. 425
  17. 95
  18. 3900
  19. 2350
  20. 1600
  21. 445
  22. 90
  23. 2700
  24. 210
  25. 170
  26. 110
  27. 465
  28. 195
  29. 4150
  30. 1650
  31. 850
  32. 1250
  33. 3050
  34. 1000
  35. 2350
  36. 80
  37. 1150
  38. 130
  39. 85
  40. 1150

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