Compléter: a)12,5m² =... dm²= ....cm²=...mm² b)4650m² =.....dam²=.....hm²=...km²

Bonsoir

12.5 m² = 1 250 dm² = 125 000cm² = 12 500 000 mm²
4650m² = 46.50 dam² = 0.4560 hm² = 0,004650 km²

Bonjour, 

[tex]12,5m^2=1250dm^2=125000cm^2=12500000mm^2[/tex]

[tex]4650m^2=46.50dam^2=0.4650hm^2=0.004650km^2[/tex]

Bonne soirée! =)