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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 824 · 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. 1.44 × 5 =
  2. 2.42 × 50 =
  3. 3.67 × 50 =
  4. 4.86 × 5 =
  5. 5.56 × 5 =
  6. 6.85 × 50 =
  7. 7.87 × 5 =
  8. 8.36 × 5 =
  9. 9.20 × 5 =
  10. 10.49 × 50 =
  11. 11.17 × 50 =
  12. 12.92 × 5 =
  13. 13.93 × 50 =
  14. 14.89 × 50 =
  15. 15.27 × 50 =
  16. 16.86 × 50 =
  17. 17.80 × 50 =
  18. 18.97 × 5 =
  19. 19.20 × 50 =
  20. 20.45 × 5 =
  21. 21.39 × 5 =
  22. 22.73 × 50 =
  23. 23.42 × 50 =
  24. 24.61 × 50 =
  25. 25.31 × 5 =
  26. 26.48 × 50 =
  27. 27.20 × 5 =
  28. 28.24 × 50 =
  29. 29.24 × 5 =
  30. 30.96 × 5 =
  31. 31.28 × 5 =
  32. 32.66 × 5 =
  33. 33.85 × 50 =
  34. 34.18 × 5 =
  35. 35.87 × 5 =
  36. 36.77 × 50 =
  37. 37.59 × 50 =
  38. 38.35 × 50 =
  39. 39.88 × 50 =
  40. 40.29 × 5 =

Answer key

  1. 220
  2. 2100
  3. 3350
  4. 430
  5. 280
  6. 4250
  7. 435
  8. 180
  9. 100
  10. 2450
  11. 850
  12. 460
  13. 4650
  14. 4450
  15. 1350
  16. 4300
  17. 4000
  18. 485
  19. 1000
  20. 225
  21. 195
  22. 3650
  23. 2100
  24. 3050
  25. 155
  26. 2400
  27. 100
  28. 1200
  29. 120
  30. 480
  31. 140
  32. 330
  33. 4250
  34. 90
  35. 435
  36. 3850
  37. 2950
  38. 1750
  39. 4400
  40. 145

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