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Published byIsabel Moss Modified over 10 years ago
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ACTIVITES MENTALES Collège Jean Monnet Préparez-vous !
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Question 1 73 99 =
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Question 2 Tracer [BA). B A
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Question 3 Calculer le triple de 9,4.
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Question 4 Peut-on construire un triangle ABC tel que : AB = 3,2 cm BC = 5 cm et AC = 9 cm ?
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Coordonnées de A? Question 5 1 1 0 A
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Correction
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Question 1 73 99 = 73 (100 – 1) = 73 100 – 73 1 = 7300 – 73 = 7227
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Question 2 Tracer [BA). B A
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Question 3 Calculer le triple de 9,4. 28,2 3 9,4 =
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Question 4 AC = 9 cm AB+BC = 3,2 + 5 = 8,2cm 8,2 < 9 donc on ne peut pas construire le triangle ABC.
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Coordonnées de A? Question 5 1 1 0 A A (-3; 2) -3 2
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FIN !
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