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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 819 · 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. 1.18 × 5 =
  2. 2.46 × 5 =
  3. 3.79 × 5 =
  4. 4.76 × 5 =
  5. 5.66 × 50 =
  6. 6.55 × 50 =
  7. 7.25 × 5 =
  8. 8.71 × 5 =
  9. 9.30 × 5 =
  10. 10.78 × 5 =
  11. 11.70 × 50 =
  12. 12.84 × 50 =
  13. 13.56 × 5 =
  14. 14.13 × 50 =
  15. 15.50 × 50 =
  16. 16.17 × 5 =
  17. 17.18 × 5 =
  18. 18.91 × 50 =
  19. 19.82 × 50 =
  20. 20.48 × 5 =
  21. 21.73 × 50 =
  22. 22.34 × 5 =
  23. 23.12 × 5 =
  24. 24.84 × 50 =
  25. 25.23 × 5 =
  26. 26.25 × 50 =
  27. 27.88 × 50 =
  28. 28.24 × 5 =
  29. 29.86 × 50 =
  30. 30.59 × 50 =
  31. 31.35 × 50 =
  32. 32.14 × 5 =
  33. 33.96 × 5 =
  34. 34.40 × 5 =
  35. 35.77 × 50 =
  36. 36.53 × 50 =
  37. 37.86 × 5 =
  38. 38.30 × 50 =
  39. 39.41 × 50 =
  40. 40.47 × 50 =

Answer key

  1. 90
  2. 230
  3. 395
  4. 380
  5. 3300
  6. 2750
  7. 125
  8. 355
  9. 150
  10. 390
  11. 3500
  12. 4200
  13. 280
  14. 650
  15. 2500
  16. 85
  17. 90
  18. 4550
  19. 4100
  20. 240
  21. 3650
  22. 170
  23. 60
  24. 4200
  25. 115
  26. 1250
  27. 4400
  28. 120
  29. 4300
  30. 2950
  31. 1750
  32. 70
  33. 480
  34. 200
  35. 3850
  36. 2650
  37. 430
  38. 1500
  39. 2050
  40. 2350

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