0.75×18÷0.15,2.07÷0.23÷0.45,21.36÷0.8-12.9,7.28+3.2÷2.5

0.75×18÷0.15,2.07÷0.23÷0.45,21.36÷0.8-12.9,7.28+3.2÷2.5 简便计算 0.75×18÷0.15 2.07÷0.23÷0.45 21.36÷0.8-12.9 简 递等式计算 0.75×18÷0.15 2.07÷0.23÷0.45 21.36÷0.8 请计算.快.21.36÷0.8-12.9 7.28+3.2÷2.5 脱式计算：0.75×18÷0.15；    2.07÷0.23÷0.45；&nb 21.36÷0.8-12.9 简算 21.36÷0.8-12.9的简算 计算下面各题.21.36÷0.8-12.9 能简算的简算一、80÷0.2÷4二、0.75x18÷0.15三、2.8x3.6+1.4x2.8四、21.36÷0.8-1 21.36÷0.8-12.9 可以简算就简算 0.65x201 2.5x4.25x0.8 0.78x18÷0.15,0.25x（4+0.4）,7.28+3.2÷2.5,3.25x67+5.57x67可以简便算法 7.28+3.2÷2.5（用简便方法计算.）