Question

Aflați necunoscutele :a)x+80dam=4km ,b) 400m+x=30hm ,c) x:9= 5 dg ,d)3cg :x=5 mg

Answer 1

a) x+80dam=4km=400dam =>x=320dam
b)400m+x=30hm=3000m =>x=2600m
c)x:9=5dg=>x=45dg
d)3cg:x=5mg=0,5cg =>x=3:0,5=6cg