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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 867 · 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. 1.15 × 5 =
  2. 2.94 × 50 =
  3. 3.26 × 50 =
  4. 4.51 × 5 =
  5. 5.37 × 5 =
  6. 6.57 × 5 =
  7. 7.47 × 50 =
  8. 8.87 × 5 =
  9. 9.81 × 50 =
  10. 10.13 × 50 =
  11. 11.59 × 5 =
  12. 12.42 × 50 =
  13. 13.25 × 5 =
  14. 14.78 × 5 =
  15. 15.25 × 50 =
  16. 16.89 × 5 =
  17. 17.98 × 5 =
  18. 18.87 × 5 =
  19. 19.73 × 5 =
  20. 20.16 × 50 =
  21. 21.57 × 5 =
  22. 22.41 × 50 =
  23. 23.57 × 5 =
  24. 24.30 × 50 =
  25. 25.57 × 50 =
  26. 26.30 × 5 =
  27. 27.65 × 5 =
  28. 28.71 × 5 =
  29. 29.51 × 5 =
  30. 30.97 × 5 =
  31. 31.60 × 5 =
  32. 32.13 × 50 =
  33. 33.92 × 5 =
  34. 34.69 × 50 =
  35. 35.74 × 50 =
  36. 36.96 × 5 =
  37. 37.87 × 5 =
  38. 38.94 × 50 =
  39. 39.41 × 50 =
  40. 40.29 × 5 =

Answer key

  1. 75
  2. 4700
  3. 1300
  4. 255
  5. 185
  6. 285
  7. 2350
  8. 435
  9. 4050
  10. 650
  11. 295
  12. 2100
  13. 125
  14. 390
  15. 1250
  16. 445
  17. 490
  18. 435
  19. 365
  20. 800
  21. 285
  22. 2050
  23. 285
  24. 1500
  25. 2850
  26. 150
  27. 325
  28. 355
  29. 255
  30. 485
  31. 300
  32. 650
  33. 460
  34. 3450
  35. 3700
  36. 480
  37. 435
  38. 4700
  39. 2050
  40. 145

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