2dm5cm=\(2\dfrac{5}{10}\)dm
1 tấn 78kg=\(1\dfrac{78}{1000}\) tấn
6m35cm=6,35m
\(5tạ13kg=5,13tạ\)
300g=\(\dfrac{300}{1000000}\) tấn
\(473kg=\dfrac{473}{1000}tấn\)
\(770m=\dfrac{770}{1000}\left(km\right)\)
\(6cm=\dfrac{6}{100}\left(m\right)\)
\(51dm=\dfrac{51}{10}\left(m\right)\)