6-Cm19
Transcript of 6-Cm19
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Calcul mentalCalcul mental
« Les aires »« Les aires »Séquence n°5Séquence n°5
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Calculer l'aire de chaque figure.
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n°1 n°1
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n°2 n°2
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n°3n°3
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n°4 n°4
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n°5 n°5
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CorrectionCorrection
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n°1 n°1
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n°1 n°1
Aire = 9mm×3mm
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n°1 n°1
Aire = 9mm×3mm = 27mm2
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n°2 n°2
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n°2 n°2
Aire = 8dm×8dm
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n°2 n°2
Aire = 8dm×8dm= 64dm2
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n°3n°3
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n°3n°3
Aire =5m×12m
2
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n°3n°3
Aire =5m×12m
2=
60m2
2
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n°3n°3
Aire =5m×12m
2=
60m2
2= 30m2
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n°3n°3
Aire =5m×12m
2=
60m2
2= 30m2
Aire = 5m×12m
2
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n°3n°3
Aire =5m×12m
2=
60m2
2= 30m2
Aire = 5m×12m
2= 5m×6m
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n°3n°3
Aire =5m×12m
2=
60m2
2= 30m2
Aire = 5m×12m
2= 5m×6m= 30m2
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n°4 n°4
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n°4 n°4
Aire =7cm×6 cm
2
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n°4 n°4
Aire =7cm×6 cm
2=
42cm2
2
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n°4 n°4
Aire =7cm×6 cm
2=
42cm2
2= 21cm2
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n°4 n°4
Aire =7cm×6 cm
2=
42cm2
2= 21cm2
Aire = 7cm×6cm
2
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n°4 n°4
Aire =7cm×6 cm
2=
42cm2
2= 21cm2
Aire = 7cm×6cm
2= 7cm×3cm
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n°4 n°4
Aire =7cm×6 cm
2=
42cm2
2= 21cm2
Aire = 7cm×6cm
2= 7cm×3cm= 21cm2
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n°5 n°5
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n°5 n°5
Aire =6dam×6dam
2
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n°5 n°5
Aire =6dam×6dam
2=
36dam2
2
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n°5 n°5
Aire =6dam×6dam
2=
36dam2
2= 18dam2
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n°5 n°5
Aire =6dam×6dam
2=
36dam2
2= 18dam2
Aire = 6dam×6 dam
2
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n°5 n°5
Aire =6dam×6dam
2=
36dam2
2= 18dam2
Aire = 6dam×6 dam
2= 6dam×3dam
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n°5 n°5
Aire =6dam×6dam
2=
36dam2
2= 18dam2
Aire = 6dam×6 dam
2= 6dam×3dam= 18dam2