Exercice 1 - Collège Jean Monnet
n°1 page 68 a) 3+2+5+2+1 = 13 donc l'effectif total est 13. 3×15+2×35+5×50+2 ... N°25 page 113 a) 63,09+63,23+65,04+62,77+62,24+61,81+63,78+62,57+62,39+61,78 ...
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