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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 956 · 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. 1.91 × 50 =
  2. 2.29 × 50 =
  3. 3.81 × 50 =
  4. 4.88 × 50 =
  5. 5.46 × 50 =
  6. 6.34 × 5 =
  7. 7.98 × 50 =
  8. 8.31 × 5 =
  9. 9.88 × 5 =
  10. 10.42 × 5 =
  11. 11.48 × 5 =
  12. 12.61 × 50 =
  13. 13.34 × 5 =
  14. 14.54 × 5 =
  15. 15.98 × 50 =
  16. 16.34 × 50 =
  17. 17.67 × 5 =
  18. 18.50 × 5 =
  19. 19.96 × 50 =
  20. 20.31 × 50 =
  21. 21.55 × 5 =
  22. 22.75 × 50 =
  23. 23.32 × 5 =
  24. 24.73 × 5 =
  25. 25.71 × 50 =
  26. 26.92 × 50 =
  27. 27.48 × 5 =
  28. 28.96 × 5 =
  29. 29.36 × 5 =
  30. 30.65 × 50 =
  31. 31.51 × 5 =
  32. 32.17 × 5 =
  33. 33.48 × 5 =
  34. 34.75 × 50 =
  35. 35.79 × 5 =
  36. 36.30 × 50 =
  37. 37.76 × 50 =
  38. 38.39 × 50 =
  39. 39.25 × 50 =
  40. 40.31 × 5 =

Answer key

  1. 4550
  2. 1450
  3. 4050
  4. 4400
  5. 2300
  6. 170
  7. 4900
  8. 155
  9. 440
  10. 210
  11. 240
  12. 3050
  13. 170
  14. 270
  15. 4900
  16. 1700
  17. 335
  18. 250
  19. 4800
  20. 1550
  21. 275
  22. 3750
  23. 160
  24. 365
  25. 3550
  26. 4600
  27. 240
  28. 480
  29. 180
  30. 3250
  31. 255
  32. 85
  33. 240
  34. 3750
  35. 395
  36. 1500
  37. 3800
  38. 1950
  39. 1250
  40. 155

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