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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 973 · 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. 1.44 × 5 =
  2. 2.35 × 50 =
  3. 3.89 × 5 =
  4. 4.22 × 50 =
  5. 5.24 × 5 =
  6. 6.75 × 5 =
  7. 7.53 × 5 =
  8. 8.38 × 5 =
  9. 9.57 × 50 =
  10. 10.41 × 50 =
  11. 11.25 × 5 =
  12. 12.91 × 50 =
  13. 13.64 × 5 =
  14. 14.48 × 50 =
  15. 15.31 × 50 =
  16. 16.74 × 5 =
  17. 17.83 × 50 =
  18. 18.58 × 50 =
  19. 19.34 × 5 =
  20. 20.30 × 5 =
  21. 21.47 × 50 =
  22. 22.35 × 50 =
  23. 23.61 × 50 =
  24. 24.52 × 50 =
  25. 25.72 × 50 =
  26. 26.34 × 5 =
  27. 27.58 × 50 =
  28. 28.71 × 5 =
  29. 29.49 × 5 =
  30. 30.74 × 5 =
  31. 31.67 × 50 =
  32. 32.61 × 5 =
  33. 33.87 × 50 =
  34. 34.79 × 5 =
  35. 35.42 × 50 =
  36. 36.59 × 5 =
  37. 37.49 × 5 =
  38. 38.51 × 50 =
  39. 39.52 × 5 =
  40. 40.87 × 50 =

Answer key

  1. 220
  2. 1750
  3. 445
  4. 1100
  5. 120
  6. 375
  7. 265
  8. 190
  9. 2850
  10. 2050
  11. 125
  12. 4550
  13. 320
  14. 2400
  15. 1550
  16. 370
  17. 4150
  18. 2900
  19. 170
  20. 150
  21. 2350
  22. 1750
  23. 3050
  24. 2600
  25. 3600
  26. 170
  27. 2900
  28. 355
  29. 245
  30. 370
  31. 3350
  32. 305
  33. 4350
  34. 395
  35. 2100
  36. 295
  37. 245
  38. 2550
  39. 260
  40. 4350

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