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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 997 · 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. 1.61 × 5 =
  2. 2.56 × 5 =
  3. 3.93 × 5 =
  4. 4.84 × 50 =
  5. 5.81 × 5 =
  6. 6.51 × 50 =
  7. 7.24 × 5 =
  8. 8.54 × 50 =
  9. 9.65 × 50 =
  10. 10.82 × 50 =
  11. 11.82 × 50 =
  12. 12.39 × 50 =
  13. 13.63 × 50 =
  14. 14.15 × 5 =
  15. 15.23 × 5 =
  16. 16.91 × 5 =
  17. 17.30 × 5 =
  18. 18.65 × 50 =
  19. 19.31 × 5 =
  20. 20.53 × 5 =
  21. 21.35 × 5 =
  22. 22.39 × 5 =
  23. 23.64 × 50 =
  24. 24.68 × 50 =
  25. 25.39 × 5 =
  26. 26.98 × 5 =
  27. 27.42 × 50 =
  28. 28.73 × 5 =
  29. 29.78 × 5 =
  30. 30.90 × 5 =
  31. 31.44 × 5 =
  32. 32.51 × 50 =
  33. 33.78 × 5 =
  34. 34.36 × 50 =
  35. 35.12 × 5 =
  36. 36.79 × 5 =
  37. 37.24 × 50 =
  38. 38.19 × 5 =
  39. 39.38 × 50 =
  40. 40.56 × 50 =

Answer key

  1. 305
  2. 280
  3. 465
  4. 4200
  5. 405
  6. 2550
  7. 120
  8. 2700
  9. 3250
  10. 4100
  11. 4100
  12. 1950
  13. 3150
  14. 75
  15. 115
  16. 455
  17. 150
  18. 3250
  19. 155
  20. 265
  21. 175
  22. 195
  23. 3200
  24. 3400
  25. 195
  26. 490
  27. 2100
  28. 365
  29. 390
  30. 450
  31. 220
  32. 2550
  33. 390
  34. 1800
  35. 60
  36. 395
  37. 1200
  38. 95
  39. 1900
  40. 2800

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