3.5×2.63.5 2.3×0.52.3
1×7.67.6 4.8×0.884.8
12×0.4=
1.5×0.9=
3.03×0.2=
0.3+0.7×3=
6.2×0.05=
12.5×0.8=
140×0.6=
8.5×0.6-0.6=
5.2×6.4+4.8×6.4 0.5×4.8×1.25 6.36×7.5+0.75×36.4
4.2×0.8= 2.7×0.11= ☆2.9×0.56=
2.06×4.8= 8.5×0.208= 6.23×4.2≈(精确到百分位)