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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 874 · 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. 1.31 × 5 =
  2. 2.17 × 50 =
  3. 3.41 × 50 =
  4. 4.26 × 50 =
  5. 5.15 × 5 =
  6. 6.61 × 50 =
  7. 7.62 × 50 =
  8. 8.31 × 50 =
  9. 9.77 × 50 =
  10. 10.96 × 5 =
  11. 11.46 × 50 =
  12. 12.22 × 5 =
  13. 13.26 × 50 =
  14. 14.51 × 50 =
  15. 15.60 × 5 =
  16. 16.57 × 5 =
  17. 17.79 × 50 =
  18. 18.88 × 50 =
  19. 19.19 × 5 =
  20. 20.28 × 5 =
  21. 21.88 × 5 =
  22. 22.70 × 5 =
  23. 23.44 × 50 =
  24. 24.36 × 50 =
  25. 25.27 × 5 =
  26. 26.82 × 50 =
  27. 27.43 × 5 =
  28. 28.59 × 50 =
  29. 29.25 × 5 =
  30. 30.21 × 50 =
  31. 31.33 × 50 =
  32. 32.17 × 50 =
  33. 33.28 × 5 =
  34. 34.61 × 5 =
  35. 35.46 × 50 =
  36. 36.67 × 50 =
  37. 37.53 × 50 =
  38. 38.42 × 5 =
  39. 39.65 × 50 =
  40. 40.44 × 5 =

Answer key

  1. 155
  2. 850
  3. 2050
  4. 1300
  5. 75
  6. 3050
  7. 3100
  8. 1550
  9. 3850
  10. 480
  11. 2300
  12. 110
  13. 1300
  14. 2550
  15. 300
  16. 285
  17. 3950
  18. 4400
  19. 95
  20. 140
  21. 440
  22. 350
  23. 2200
  24. 1800
  25. 135
  26. 4100
  27. 215
  28. 2950
  29. 125
  30. 1050
  31. 1650
  32. 850
  33. 140
  34. 305
  35. 2300
  36. 3350
  37. 2650
  38. 210
  39. 3250
  40. 220

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