Chuyến thứ 2 chở đc \(6715-1430=5285\left(kg.thóc\right)\)
Cả 2 chuyến chở đc \(6715+5285=...\left(kg.thóc\right)\)
\(1m^2=100dm^2 \)
\(630dm^2=63000cm^2\)
\(1km^2=1000000m^2\)
\(50000000m^2=50km^2\)
\(15km^2=15000000m^2\)
\(7km^2=7000000m^2\)
2000000:100000