Điền dấu >,<,=
5m 6cm............560cm 6dm 8mm...........680mm
2m 4cm............240cm 9m 7dm..............99dm
5dam 6dm.........506dm 5m 17dm.............517cm
3hm 4dam.........34m 420mm...............4dm 2mm
1m 3cm..............104cm 8dam 5m..............85m
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