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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 933 · 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. 1.55 × 50 =
  2. 2.60 × 50 =
  3. 3.54 × 50 =
  4. 4.79 × 50 =
  5. 5.85 × 50 =
  6. 6.80 × 5 =
  7. 7.57 × 5 =
  8. 8.19 × 50 =
  9. 9.90 × 5 =
  10. 10.63 × 5 =
  11. 11.90 × 5 =
  12. 12.27 × 5 =
  13. 13.23 × 50 =
  14. 14.41 × 5 =
  15. 15.98 × 5 =
  16. 16.78 × 50 =
  17. 17.59 × 50 =
  18. 18.60 × 5 =
  19. 19.77 × 50 =
  20. 20.90 × 50 =
  21. 21.83 × 5 =
  22. 22.84 × 5 =
  23. 23.79 × 5 =
  24. 24.98 × 5 =
  25. 25.27 × 5 =
  26. 26.50 × 5 =
  27. 27.93 × 50 =
  28. 28.89 × 5 =
  29. 29.49 × 50 =
  30. 30.19 × 5 =
  31. 31.59 × 5 =
  32. 32.55 × 50 =
  33. 33.87 × 50 =
  34. 34.50 × 5 =
  35. 35.90 × 5 =
  36. 36.14 × 50 =
  37. 37.92 × 50 =
  38. 38.22 × 5 =
  39. 39.31 × 5 =
  40. 40.27 × 50 =

Answer key

  1. 2750
  2. 3000
  3. 2700
  4. 3950
  5. 4250
  6. 400
  7. 285
  8. 950
  9. 450
  10. 315
  11. 450
  12. 135
  13. 1150
  14. 205
  15. 490
  16. 3900
  17. 2950
  18. 300
  19. 3850
  20. 4500
  21. 415
  22. 420
  23. 395
  24. 490
  25. 135
  26. 250
  27. 4650
  28. 445
  29. 2450
  30. 95
  31. 295
  32. 2750
  33. 4350
  34. 250
  35. 450
  36. 700
  37. 4600
  38. 110
  39. 155
  40. 1350

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