Explicație pas cu pas:
a) 2,5m²+..........=1dam²=100m²
2,5m²+97,5m²=100cm²
b) 48dm²+..........=1m²=100dm²
48dm²+52dm²=100dm²
c) 27dam2+277m2+.........=1hm2
27dam²+2,77dam²+70,23dam=100dam²
d)625cm2+........=1m2
6,25dm²+75dm²=100dm²
e)318m2+277m2+.......=1hm2
3,18dam²+2,77dam²+24,05dam²=100dam²
f)21dm²+450cm²+;;=1m²
21dm²+4,5dm²+74,5dm²=100dm²