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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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Academic year: 2022

Partager "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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Entraînement 1 Calcule et donne le résultat sous la forme d’une écriture fractionnaire :

A= + A = A =

B = + B = B =

C = + C = C =

D = + D = D =

E = + F = + G = + H = + +

Entraînement 2 Calcule et donne le résultat sous la forme d’une écriture fractionnaire

A= - A = A = A =

B = - C = - D = -

E = – F = - G = - H = - +

Entraînement 3 Complète les pointillés en multipliant le numérateur et le dénominateur par ( - 1 )

= = = = = = = =

= = = = = = = =

Entraînement 4 Calcule et donne le résultat sous la forme d’une écriture fractionnaire :

A= + A= + A =

B = + B = + B =

C = + C = + C =

D = + D = + D =

Fiche …… Connaissance des nombres Somme d’écritures fractionnaires Fr22

A = + A = A = A =

B = + B = B = B =

ADDITIONNER 2 ECTRITURES FRACTIONNAIRES DEMÊME

DÉNOMINATEUR

A = - A = A = A =

B = - B = B =

SOUSTRAIRE 2 ÉCRITURES FRACTIONNAIRES DEMÊME

DÉNOMINATEUR

A = + A = + A =

B = + B = + B =

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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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 ( - )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

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