2000 $д{м}^2$ = 2000 : 100 = 20 ${м}^2$;
65000 $д{м}^2$ = 65000 : 100 = 650 ${м}^2$;
450 $с{м}^2$ = 400 $с{м}^2$ + 50 $с{м}^2$ = 400 : 100 + 50 = 4 $д{м}^2$ 50 $с{м}^2$;
8435 $с{м}^2$ = 8400 $с{м}^2$ + 35 $с{м}^2$ = 8400 : 100 + 35 = 84 $д{м}^2$ 35 $с{м}^2$.