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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 893 · 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. 1.70 × 50 =
  2. 2.61 × 50 =
  3. 3.25 × 50 =
  4. 4.50 × 5 =
  5. 5.39 × 5 =
  6. 6.36 × 5 =
  7. 7.31 × 50 =
  8. 8.23 × 5 =
  9. 9.84 × 5 =
  10. 10.49 × 50 =
  11. 11.17 × 5 =
  12. 12.13 × 50 =
  13. 13.70 × 5 =
  14. 14.30 × 50 =
  15. 15.28 × 5 =
  16. 16.16 × 5 =
  17. 17.30 × 50 =
  18. 18.22 × 5 =
  19. 19.26 × 5 =
  20. 20.27 × 5 =
  21. 21.16 × 50 =
  22. 22.23 × 5 =
  23. 23.36 × 50 =
  24. 24.29 × 5 =
  25. 25.13 × 5 =
  26. 26.94 × 5 =
  27. 27.95 × 5 =
  28. 28.96 × 50 =
  29. 29.95 × 5 =
  30. 30.67 × 5 =
  31. 31.25 × 5 =
  32. 32.33 × 50 =
  33. 33.94 × 50 =
  34. 34.40 × 5 =
  35. 35.20 × 50 =
  36. 36.98 × 5 =
  37. 37.46 × 5 =
  38. 38.93 × 5 =
  39. 39.82 × 50 =
  40. 40.36 × 50 =

Answer key

  1. 3500
  2. 3050
  3. 1250
  4. 250
  5. 195
  6. 180
  7. 1550
  8. 115
  9. 420
  10. 2450
  11. 85
  12. 650
  13. 350
  14. 1500
  15. 140
  16. 80
  17. 1500
  18. 110
  19. 130
  20. 135
  21. 800
  22. 115
  23. 1800
  24. 145
  25. 65
  26. 470
  27. 475
  28. 4800
  29. 475
  30. 335
  31. 125
  32. 1650
  33. 4700
  34. 200
  35. 1000
  36. 490
  37. 230
  38. 465
  39. 4100
  40. 1800

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