Answer:
[tex]18mm<7cm<3dm<1m[/tex]
Step-by-step explanation:
First of all we will convert all unit in m then we will find which quantity is smallest.
We know that
[tex]1cm=10^{-2} m[/tex]
therefore,
7cm=[tex]7\times 10^{-2} m[/tex]
0r 7cm=0.07m
[tex]1mm=10^{-3} m[/tex]
therefore,
[tex]18mm=18\times 10^{-3} m[/tex]
[tex]18mm=.018m[/tex]
[tex]1dm=10^{-1} m[/tex]
therefore,
[tex]3dm=3\times 10^{-1} m[/tex]
[tex]3dm=0.3m[/tex]
Therefore it is clear that,
[tex].018m<.07m<.3m<1m[/tex]
It means
[tex]18mm<7cm<3dm<1m[/tex]
