0.6+1.2= 0.8-0.06 = 2+1.8= 1-0.09=
4.5+5= 6+0.04= 18.5-5= 7.77-7.7=
45+2.5 = 3.33-2.22=
1.581.85 0.83×0.250.83 9.68×1.59.68
4.8kg4kg80g 3.153.150 4.95+6.8915.62-5.21
0.32×0.19= ×19=0.608 ×=6.08