8.90+6.30=
21.30+4.70=
0.45-0.15=
21.30-7.10=
12.50-3.60=
12.50+7.10+3.60=
22.70-15.30=
19.80+22.70
0.25+0.35=
15.20
14.20
17.40
8.90
0.30
23.20
0.60
26.00
42.50
