Tu as un carré composé de 16 petits carreaux.
5/16 => tu colories 5 carreaux
3/4 = (3*4) / (4*4) = 12/16 => tu colories 12 carreaux
3/8 = (3*2) / (8*2) = 6/16 => tu colories 6 carreaux
7/32 = (7/2) / (32/2) = 3.5 / 16 => tu colories 3 carreaux et demi