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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 964 · 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. 1.36 × 50 =
  2. 2.29 × 50 =
  3. 3.29 × 5 =
  4. 4.29 × 5 =
  5. 5.58 × 5 =
  6. 6.42 × 5 =
  7. 7.29 × 50 =
  8. 8.89 × 50 =
  9. 9.36 × 50 =
  10. 10.58 × 5 =
  11. 11.66 × 5 =
  12. 12.27 × 5 =
  13. 13.62 × 50 =
  14. 14.34 × 5 =
  15. 15.77 × 5 =
  16. 16.42 × 5 =
  17. 17.94 × 50 =
  18. 18.22 × 50 =
  19. 19.93 × 50 =
  20. 20.93 × 5 =
  21. 21.56 × 50 =
  22. 22.32 × 5 =
  23. 23.51 × 50 =
  24. 24.59 × 5 =
  25. 25.61 × 5 =
  26. 26.15 × 5 =
  27. 27.34 × 50 =
  28. 28.49 × 50 =
  29. 29.60 × 50 =
  30. 30.72 × 50 =
  31. 31.62 × 5 =
  32. 32.23 × 5 =
  33. 33.79 × 50 =
  34. 34.36 × 50 =
  35. 35.60 × 5 =
  36. 36.90 × 5 =
  37. 37.46 × 50 =
  38. 38.77 × 50 =
  39. 39.82 × 50 =
  40. 40.35 × 50 =

Answer key

  1. 1800
  2. 1450
  3. 145
  4. 145
  5. 290
  6. 210
  7. 1450
  8. 4450
  9. 1800
  10. 290
  11. 330
  12. 135
  13. 3100
  14. 170
  15. 385
  16. 210
  17. 4700
  18. 1100
  19. 4650
  20. 465
  21. 2800
  22. 160
  23. 2550
  24. 295
  25. 305
  26. 75
  27. 1700
  28. 2450
  29. 3000
  30. 3600
  31. 310
  32. 115
  33. 3950
  34. 1800
  35. 300
  36. 450
  37. 2300
  38. 3850
  39. 4100
  40. 1750

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