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 E =  F =  G =  A =  A = A = B =  B = B = C =  C = C = D =  = = =    E = E = F =   F = F = G =   G = G = H = 5   H = H = par 3 A=  A = B =  B = B = C =  C = C = D = 7  D = D = E =  A=  A = B=  B = B = C =  C = C = D = 7  D = D =

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Academic year: 2022

Partager " E =  F =  G =  A =  A = A = B =  B = B = C =  C = C = D =  = = =    E = E = F =   F = F = G =   G = G = H = 5   H = H = par 3 A=  A = B =  B = B = C =  C = C = D = 7  D = D = E =  A=  A = B=  B = B = C =  C = C = D = 7  D = D = "

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Entraînement 1 Effectue les calculs suivants sans simplification et avec la calculatrice

A=  A = A =

B=  B = B =

C =  C = C =

D = 7  D = D =

Entraînement 2 Effectue les calculs suivants avec simplification et sans la calculatrice

A=  A = A =

B =  B = B =

C =  C = C =

D = 7  D = D = E =  

E = E =

F =   F = F =

G =   G = G =

H = 5   H =

H =

Entraînement 3 Effectue les calculs suivants et donne le résultat sous forme d'une fraction simplifiée ( commence par décomposer le nombre écrit en gras et simplifie avant de faire le calcul si c'est possible) :

A =  A = A =

B =  B = B =

C =  C = C =

D =  E =  F =  G = 

Fiche ……

Connaissance des nombres Produit d’écritures fractionnaires

Fr24

MULTIPLICATIONDEFRACTIONS

 = = =

Simplificatio n par 3

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A = + A = A = A = A = B = - B = B = B = B = A= + A= A = A = A = B = + B = B = B = B = C = - C = D = + D =  A = - A = A = B = - B = B = A= - A = A = B = - C = - D = - E = – F = - G = - H = -  A= + A = A = B = + B = B = C = + C = C = D = + D = D = E = + F

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A= + A= + A = B = + B = + B = C = + C = + C = D = + D = + D =   A= - A = A = A = B = - C = - D = - E = – F = - G = - H = - +  A= + A = A = B = + B = B = C = + C = C = D = + D = D = E = + F = + G = + H = + +  Somme d’écritures fractionnaires Fiche …… F

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 ( - )F =  ( - )G = ( + )  A = ( – )  B = ( + )  C =  ( + ) D = 10  ( + )E = ( + )   =  =  8 = 5  =  =  =  =  =   =  9 = 8  = 19  = 3  = = 2  =  4 = 4  =  10 = 2   = =  E = E = F =  F = F = G =  G = G = H =  H = H = A=  A

[r]

 )  (  ) F =  (  )G = ( + )  A = (  )  B = (  )  C =  (  ) D =  ( + )E = (   F =  ( - 2 )G =  H =    = = = - A=  A = A = B=  B = B = C = - 7  C = C = D =  D = D = E =    4 = =   E = E = F = 2   F = F = G =  2  G = G = H =

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A = : B = : C = 3 : D = : E = : F = : G = : 12H = :   F =  G =  H = 3   A =  B =  C = 3  D =   E =  A = + B = – C = 3 + D = + E = + F = + 7G = – H = 3 + +  Somme – Produit - Quotient d’ écritures fractionnaires Fiche …… Fr28

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