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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 968 · 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. 1.70 × 5 =
  2. 2.95 × 5 =
  3. 3.36 × 5 =
  4. 4.31 × 5 =
  5. 5.91 × 5 =
  6. 6.33 × 5 =
  7. 7.77 × 5 =
  8. 8.43 × 5 =
  9. 9.32 × 5 =
  10. 10.27 × 5 =
  11. 11.72 × 5 =
  12. 12.20 × 5 =
  13. 13.26 × 50 =
  14. 14.32 × 5 =
  15. 15.97 × 5 =
  16. 16.87 × 50 =
  17. 17.77 × 5 =
  18. 18.89 × 5 =
  19. 19.37 × 50 =
  20. 20.37 × 5 =
  21. 21.29 × 5 =
  22. 22.35 × 50 =
  23. 23.69 × 50 =
  24. 24.52 × 5 =
  25. 25.57 × 5 =
  26. 26.22 × 50 =
  27. 27.87 × 50 =
  28. 28.94 × 50 =
  29. 29.66 × 5 =
  30. 30.31 × 5 =
  31. 31.13 × 50 =
  32. 32.66 × 5 =
  33. 33.44 × 5 =
  34. 34.39 × 50 =
  35. 35.41 × 5 =
  36. 36.29 × 5 =
  37. 37.19 × 50 =
  38. 38.24 × 5 =
  39. 39.70 × 50 =
  40. 40.72 × 50 =

Answer key

  1. 350
  2. 475
  3. 180
  4. 155
  5. 455
  6. 165
  7. 385
  8. 215
  9. 160
  10. 135
  11. 360
  12. 100
  13. 1300
  14. 160
  15. 485
  16. 4350
  17. 385
  18. 445
  19. 1850
  20. 185
  21. 145
  22. 1750
  23. 3450
  24. 260
  25. 285
  26. 1100
  27. 4350
  28. 4700
  29. 330
  30. 155
  31. 650
  32. 330
  33. 220
  34. 1950
  35. 205
  36. 145
  37. 950
  38. 120
  39. 3500
  40. 3600

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