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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 860 · 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. 1.92 × 50 =
  2. 2.64 × 50 =
  3. 3.54 × 50 =
  4. 4.80 × 5 =
  5. 5.20 × 50 =
  6. 6.28 × 50 =
  7. 7.31 × 50 =
  8. 8.39 × 5 =
  9. 9.19 × 5 =
  10. 10.18 × 50 =
  11. 11.18 × 5 =
  12. 12.40 × 50 =
  13. 13.54 × 50 =
  14. 14.89 × 50 =
  15. 15.96 × 5 =
  16. 16.84 × 50 =
  17. 17.32 × 50 =
  18. 18.25 × 50 =
  19. 19.23 × 50 =
  20. 20.20 × 5 =
  21. 21.43 × 5 =
  22. 22.57 × 5 =
  23. 23.61 × 5 =
  24. 24.43 × 5 =
  25. 25.13 × 5 =
  26. 26.94 × 5 =
  27. 27.52 × 5 =
  28. 28.12 × 50 =
  29. 29.15 × 50 =
  30. 30.81 × 5 =
  31. 31.39 × 50 =
  32. 32.39 × 5 =
  33. 33.52 × 50 =
  34. 34.68 × 50 =
  35. 35.83 × 5 =
  36. 36.16 × 5 =
  37. 37.28 × 5 =
  38. 38.21 × 5 =
  39. 39.94 × 50 =
  40. 40.34 × 50 =

Answer key

  1. 4600
  2. 3200
  3. 2700
  4. 400
  5. 1000
  6. 1400
  7. 1550
  8. 195
  9. 95
  10. 900
  11. 90
  12. 2000
  13. 2700
  14. 4450
  15. 480
  16. 4200
  17. 1600
  18. 1250
  19. 1150
  20. 100
  21. 215
  22. 285
  23. 305
  24. 215
  25. 65
  26. 470
  27. 260
  28. 600
  29. 750
  30. 405
  31. 1950
  32. 195
  33. 2600
  34. 3400
  35. 415
  36. 80
  37. 140
  38. 105
  39. 4700
  40. 1700

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