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Calcul mental multiplications et divisions par 10 100 1 000 ...

Calcul mental multiplications et divisions par 10 100 1 000 ... multiplications par 0,1 0,01 0,001. 1) ‏. 3,405 x 100 =. 2) ‏. 14,78 x ... = 1 478. 3) ‏. 14,78 x 1 000 =. 4) ‏. 12,543 x ... = 125,43. 5) ‏. 3,405 x 10 =. 6) ‏. 14,78 x ... = 147 800. 7) ‏. 3,405 x 1 000 =.

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Calcul mental multiplications et divisions par 10 100 1 000 ...

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  1. Calcul mental multiplications et divisions par 10 100 1 000 ... multiplications par 0,1 0,01 0,001 ...

  2. 1)‏ 3,405 x 100 =

  3. 2)‏ 14,78 x ... = 1 478

  4. 3)‏ 14,78 x 1 000 =

  5. 4)‏ 12,543 x ... = 125,43

  6. 5)‏ 3,405 x 10 =

  7. 6)‏ 14,78 x ... = 147 800

  8. 7)‏ 3,405 x 1 000 =

  9. 8)‏ 12,543 x ... = 125 430

  10. 9)‏ 850,3 ÷ 100 =

  11. 10)‏ 3 080 ÷ ... = 308

  12. 11)‏ 850,3 ÷ ... = 0,850 3

  13. 12)‏ 3 080 ÷ 100 =

  14. 13)‏ 4 090 ÷ ... = 0,409

  15. 14)‏ 38 x 0,1 =

  16. 15)‏ 57 x ... = 0,57

  17. 16)‏ 3,87 x 0,01 =

  18. 17)‏ 50 700 x 0,0 001 =

  19. 18)‏ 30 600 x ... = 0,306

  20. 19)‏ ... x 0,01 = 0,040 5

  21. 20)‏ 100 x ... = 4 352,7

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