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a fost răspuns

calculati si apoi completati spatiile punctate :
a) 20m+2dam+31dm=...dm
b) 36cm+120mm-2dm=...cm
c) 148hm-1km+240dam+50m=...dam

Răspuns :

Oana00711
a) 20m=200dm
2dam=200dm
200dm+200dm+31dm=431dm
b) 120mm=12cm
2dm=20cm
36cm+12cm-20cm=48cm-20cm=28cm
c) 148hm=1480dam
1km=100dam
50m=5dam
1480dam-100dam+240dam+5dam=1625dam