Bonjour,
au total il y a 10 x 10 = 100 carreaux
3/10 = 30/100
20/100
4/10 = 40/100
reste = 100 - (30 + 20 + 40) = 100 - 90 = 10 carreaux
aire non colorée = 10/100 = 1/10 du carré
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Bonjour,
au total il y a 10 x 10 = 100 carreaux
3/10 = 30/100
20/100
4/10 = 40/100
reste = 100 - (30 + 20 + 40) = 100 - 90 = 10 carreaux
aire non colorée = 10/100 = 1/10 du carré