Вычислите частное по образцу-400:80=(400:10):(80:10)=40:8.....
Б) 800:400
В)16000:800
Г)300:50

800:400=(800:100):(400:100)=8:4=2 16000:800=(16000:100):(800:100)=160:8=20 300:50=(300:10):(50:10)=30:5=6