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Ajutorrrrrr la 4. Repede. Va rog

Ajutorrrrrr La 4 Repede Va Rog class=

Răspuns :

4) 4dm+6dm =10dm =1m
770mm+230mm=1000mm=1?
9dm+10cm=1m
80cm+2dm=1m
6m+10dm+300cm=100 dm
9dm+10cm+2000mm=0.9+0.1+2=3m
6)50hm =500dam-300dam=200dam=2000m
2000m:20=100 bucăți
7)86dam = 860 m-400=460m=46 dam
1 km= 100 dam
100-46=54 dam mai are nevoie