400g= kg 32dm2= m2 0.5t= kg
4550m= km 2m57cm= m 4.34+5.56=
5.73+5.27= 8-1.3= 7.51-6.5= 6.9+2.32=
3.64+0.48= 54-9.63= 98.2-13.4=