Question

4дм.кв-25см.кч. 3м.кв-67дм.кв    

Answer 1

4 дм2-25см2=(4*100см2)-25 см2= 400см2-25см2=375 см2
3м2-67дм2=(3*100дм2)-67 дм2=300дм2-67дм2=233дм2