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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 890 · 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. 1.30 × 50 =
  2. 2.92 × 50 =
  3. 3.72 × 5 =
  4. 4.85 × 50 =
  5. 5.72 × 5 =
  6. 6.72 × 5 =
  7. 7.96 × 5 =
  8. 8.30 × 50 =
  9. 9.71 × 5 =
  10. 10.31 × 5 =
  11. 11.92 × 50 =
  12. 12.49 × 50 =
  13. 13.15 × 50 =
  14. 14.14 × 50 =
  15. 15.22 × 50 =
  16. 16.26 × 5 =
  17. 17.49 × 50 =
  18. 18.97 × 5 =
  19. 19.17 × 5 =
  20. 20.32 × 5 =
  21. 21.58 × 5 =
  22. 22.51 × 50 =
  23. 23.56 × 50 =
  24. 24.54 × 5 =
  25. 25.73 × 50 =
  26. 26.32 × 5 =
  27. 27.91 × 50 =
  28. 28.37 × 50 =
  29. 29.82 × 5 =
  30. 30.43 × 50 =
  31. 31.86 × 5 =
  32. 32.97 × 50 =
  33. 33.79 × 5 =
  34. 34.58 × 50 =
  35. 35.26 × 50 =
  36. 36.22 × 5 =
  37. 37.14 × 50 =
  38. 38.48 × 5 =
  39. 39.72 × 50 =
  40. 40.90 × 50 =

Answer key

  1. 1500
  2. 4600
  3. 360
  4. 4250
  5. 360
  6. 360
  7. 480
  8. 1500
  9. 355
  10. 155
  11. 4600
  12. 2450
  13. 750
  14. 700
  15. 1100
  16. 130
  17. 2450
  18. 485
  19. 85
  20. 160
  21. 290
  22. 2550
  23. 2800
  24. 270
  25. 3650
  26. 160
  27. 4550
  28. 1850
  29. 410
  30. 2150
  31. 430
  32. 4850
  33. 395
  34. 2900
  35. 1300
  36. 110
  37. 700
  38. 240
  39. 3600
  40. 4500

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