13.8-8= 6.6+4= 0.083×1000= 2.3×4×0=
23+4.7= 10-3.24= 0.06×0.7= 19.25×0.25×4=
4.5+15.5=
6-2.8=
12.5×4=
2.5×6=
1.9×5=
26.7+5.8=
8.2-7.7=
1.4×4=
0.8= 0.129= 0.03= 0.047=