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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 833 · 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. 1.97 × 5 =
  2. 2.69 × 50 =
  3. 3.58 × 50 =
  4. 4.68 × 5 =
  5. 5.21 × 5 =
  6. 6.50 × 50 =
  7. 7.41 × 50 =
  8. 8.65 × 50 =
  9. 9.26 × 5 =
  10. 10.18 × 5 =
  11. 11.75 × 50 =
  12. 12.27 × 50 =
  13. 13.34 × 5 =
  14. 14.77 × 50 =
  15. 15.23 × 50 =
  16. 16.52 × 5 =
  17. 17.94 × 50 =
  18. 18.16 × 50 =
  19. 19.12 × 5 =
  20. 20.22 × 5 =
  21. 21.58 × 50 =
  22. 22.16 × 50 =
  23. 23.27 × 50 =
  24. 24.52 × 5 =
  25. 25.33 × 50 =
  26. 26.24 × 50 =
  27. 27.83 × 5 =
  28. 28.43 × 50 =
  29. 29.26 × 50 =
  30. 30.78 × 5 =
  31. 31.93 × 5 =
  32. 32.48 × 5 =
  33. 33.38 × 50 =
  34. 34.70 × 5 =
  35. 35.28 × 5 =
  36. 36.36 × 50 =
  37. 37.30 × 50 =
  38. 38.33 × 50 =
  39. 39.34 × 50 =
  40. 40.27 × 50 =

Answer key

  1. 485
  2. 3450
  3. 2900
  4. 340
  5. 105
  6. 2500
  7. 2050
  8. 3250
  9. 130
  10. 90
  11. 3750
  12. 1350
  13. 170
  14. 3850
  15. 1150
  16. 260
  17. 4700
  18. 800
  19. 60
  20. 110
  21. 2900
  22. 800
  23. 1350
  24. 260
  25. 1650
  26. 1200
  27. 415
  28. 2150
  29. 1300
  30. 390
  31. 465
  32. 240
  33. 1900
  34. 350
  35. 140
  36. 1800
  37. 1500
  38. 1650
  39. 1700
  40. 1350

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