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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 986 · 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. 1.93 × 50 =
  2. 2.82 × 5 =
  3. 3.18 × 5 =
  4. 4.45 × 5 =
  5. 5.18 × 5 =
  6. 6.48 × 5 =
  7. 7.20 × 50 =
  8. 8.46 × 5 =
  9. 9.77 × 50 =
  10. 10.17 × 50 =
  11. 11.37 × 50 =
  12. 12.26 × 50 =
  13. 13.58 × 5 =
  14. 14.85 × 50 =
  15. 15.84 × 5 =
  16. 16.26 × 5 =
  17. 17.35 × 5 =
  18. 18.54 × 5 =
  19. 19.57 × 50 =
  20. 20.12 × 50 =
  21. 21.96 × 5 =
  22. 22.96 × 5 =
  23. 23.72 × 5 =
  24. 24.67 × 50 =
  25. 25.82 × 50 =
  26. 26.16 × 5 =
  27. 27.90 × 50 =
  28. 28.63 × 5 =
  29. 29.42 × 50 =
  30. 30.77 × 50 =
  31. 31.53 × 5 =
  32. 32.46 × 5 =
  33. 33.81 × 5 =
  34. 34.63 × 5 =
  35. 35.72 × 5 =
  36. 36.47 × 50 =
  37. 37.35 × 5 =
  38. 38.92 × 50 =
  39. 39.20 × 50 =
  40. 40.36 × 5 =

Answer key

  1. 4650
  2. 410
  3. 90
  4. 225
  5. 90
  6. 240
  7. 1000
  8. 230
  9. 3850
  10. 850
  11. 1850
  12. 1300
  13. 290
  14. 4250
  15. 420
  16. 130
  17. 175
  18. 270
  19. 2850
  20. 600
  21. 480
  22. 480
  23. 360
  24. 3350
  25. 4100
  26. 80
  27. 4500
  28. 315
  29. 2100
  30. 3850
  31. 265
  32. 230
  33. 405
  34. 315
  35. 360
  36. 2350
  37. 175
  38. 4600
  39. 1000
  40. 180

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