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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 982 · 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. 1.69 × 5 =
  2. 2.60 × 5 =
  3. 3.88 × 5 =
  4. 4.25 × 5 =
  5. 5.94 × 50 =
  6. 6.30 × 50 =
  7. 7.79 × 5 =
  8. 8.25 × 50 =
  9. 9.20 × 50 =
  10. 10.88 × 5 =
  11. 11.16 × 5 =
  12. 12.23 × 5 =
  13. 13.75 × 50 =
  14. 14.57 × 50 =
  15. 15.69 × 5 =
  16. 16.69 × 5 =
  17. 17.16 × 50 =
  18. 18.40 × 50 =
  19. 19.69 × 5 =
  20. 20.24 × 50 =
  21. 21.33 × 5 =
  22. 22.64 × 5 =
  23. 23.39 × 50 =
  24. 24.39 × 50 =
  25. 25.78 × 5 =
  26. 26.16 × 50 =
  27. 27.73 × 50 =
  28. 28.32 × 5 =
  29. 29.37 × 50 =
  30. 30.72 × 5 =
  31. 31.79 × 5 =
  32. 32.86 × 5 =
  33. 33.73 × 50 =
  34. 34.43 × 50 =
  35. 35.37 × 50 =
  36. 36.32 × 50 =
  37. 37.55 × 5 =
  38. 38.12 × 50 =
  39. 39.85 × 50 =
  40. 40.16 × 5 =

Answer key

  1. 345
  2. 300
  3. 440
  4. 125
  5. 4700
  6. 1500
  7. 395
  8. 1250
  9. 1000
  10. 440
  11. 80
  12. 115
  13. 3750
  14. 2850
  15. 345
  16. 345
  17. 800
  18. 2000
  19. 345
  20. 1200
  21. 165
  22. 320
  23. 1950
  24. 1950
  25. 390
  26. 800
  27. 3650
  28. 160
  29. 1850
  30. 360
  31. 395
  32. 430
  33. 3650
  34. 2150
  35. 1850
  36. 1600
  37. 275
  38. 600
  39. 4250
  40. 80

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