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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 891 · 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. 1.30 × 50 =
  2. 2.49 × 5 =
  3. 3.35 × 5 =
  4. 4.22 × 50 =
  5. 5.64 × 5 =
  6. 6.65 × 50 =
  7. 7.17 × 5 =
  8. 8.84 × 5 =
  9. 9.41 × 5 =
  10. 10.16 × 5 =
  11. 11.25 × 5 =
  12. 12.98 × 5 =
  13. 13.82 × 5 =
  14. 14.54 × 50 =
  15. 15.41 × 50 =
  16. 16.31 × 5 =
  17. 17.28 × 5 =
  18. 18.29 × 5 =
  19. 19.88 × 50 =
  20. 20.42 × 5 =
  21. 21.87 × 50 =
  22. 22.82 × 5 =
  23. 23.83 × 5 =
  24. 24.57 × 5 =
  25. 25.17 × 50 =
  26. 26.94 × 5 =
  27. 27.64 × 5 =
  28. 28.15 × 50 =
  29. 29.43 × 5 =
  30. 30.53 × 5 =
  31. 31.95 × 5 =
  32. 32.91 × 5 =
  33. 33.78 × 50 =
  34. 34.74 × 50 =
  35. 35.24 × 5 =
  36. 36.32 × 5 =
  37. 37.68 × 50 =
  38. 38.35 × 5 =
  39. 39.59 × 5 =
  40. 40.85 × 50 =

Answer key

  1. 1500
  2. 245
  3. 175
  4. 1100
  5. 320
  6. 3250
  7. 85
  8. 420
  9. 205
  10. 80
  11. 125
  12. 490
  13. 410
  14. 2700
  15. 2050
  16. 155
  17. 140
  18. 145
  19. 4400
  20. 210
  21. 4350
  22. 410
  23. 415
  24. 285
  25. 850
  26. 470
  27. 320
  28. 750
  29. 215
  30. 265
  31. 475
  32. 455
  33. 3900
  34. 3700
  35. 120
  36. 160
  37. 3400
  38. 175
  39. 295
  40. 4250

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