720.81+10.4=
7.062.4-5.7=
50.41.9-1.8=
3.760.25+25.8=
0.75180.15=
2.070.230.45=
21.360.8-12.9=
7.28+3.22.5=
1.080.80.27=
2.050.82+33.6=
44.280.94.1=
9.07-22.783.4=
2.70.83.4=
12.33.1+5.6=
4.93.2-2.5=
36.4-6.45.3=
（1.8-1.5）15=
9.80.6-1.21.2=
3.874+6.13=
16-2.546=
213.60.80.3=
16.065.5 1.7=
42（5.250.25）=
6.480.1210.8=