a: 2m27mm=2027mm
6km72m=6,72km
208m=0,208km
926mm=9,26m
b: \(4m^25cm^2=4.0005m^2\)
\(4km^2455dam^2=\left(4\dfrac{455}{10^4}\right)km^2\)
\(1306.21cm^2=0.130621m^2\)
c: 23,61kg=2,361 yến
605kg=0,605 tấn
5,04 tấn=5040kg
d: 2h15'=135'
4h45'=4,75h
3,5p=210 giây