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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 898 · 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. 1.38 × 50 =
  2. 2.21 × 5 =
  3. 3.40 × 50 =
  4. 4.96 × 50 =
  5. 5.34 × 50 =
  6. 6.97 × 5 =
  7. 7.63 × 50 =
  8. 8.19 × 5 =
  9. 9.66 × 50 =
  10. 10.63 × 50 =
  11. 11.52 × 5 =
  12. 12.84 × 5 =
  13. 13.41 × 50 =
  14. 14.94 × 5 =
  15. 15.52 × 5 =
  16. 16.66 × 50 =
  17. 17.64 × 50 =
  18. 18.92 × 5 =
  19. 19.78 × 5 =
  20. 20.95 × 5 =
  21. 21.60 × 50 =
  22. 22.92 × 5 =
  23. 23.73 × 50 =
  24. 24.30 × 5 =
  25. 25.22 × 5 =
  26. 26.55 × 50 =
  27. 27.30 × 5 =
  28. 28.41 × 5 =
  29. 29.38 × 5 =
  30. 30.91 × 50 =
  31. 31.15 × 5 =
  32. 32.84 × 5 =
  33. 33.49 × 50 =
  34. 34.65 × 5 =
  35. 35.22 × 5 =
  36. 36.85 × 50 =
  37. 37.82 × 50 =
  38. 38.66 × 5 =
  39. 39.66 × 5 =
  40. 40.97 × 5 =

Answer key

  1. 1900
  2. 105
  3. 2000
  4. 4800
  5. 1700
  6. 485
  7. 3150
  8. 95
  9. 3300
  10. 3150
  11. 260
  12. 420
  13. 2050
  14. 470
  15. 260
  16. 3300
  17. 3200
  18. 460
  19. 390
  20. 475
  21. 3000
  22. 460
  23. 3650
  24. 150
  25. 110
  26. 2750
  27. 150
  28. 205
  29. 190
  30. 4550
  31. 75
  32. 420
  33. 2450
  34. 325
  35. 110
  36. 4250
  37. 4100
  38. 330
  39. 330
  40. 485

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