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calculeaza vezi modelul: model:500dm+300cm=.......m
^ ^
l l
50m 3m

7km+23hm=
^ ^
l l
.....m ........m


2700cm+7dm=.......m
^ ^
l l
.....m ....m


Răspuns :

7km+23hm=7000m+2300m=9300m
2700cm+7dm=27m+0,7m=27,7m