标签：5x0

7.5x0.8+1.2x12.5+2.5x1.6简便计算如下：7.5x0.8+1.2x12.5+2.5x1.6=0.8×7.5+2.5×2×0.8+1.2×12.5=7.5×0.8+5×0.8+1.2×12.5=（7.5+5）×0.8+1....

2.33x0.5x0.4x5的简便方法如下：2.33x0.5x0.4x5=2.33x（0.5x5）x0.4=2.33x2.5x0.4=2.33x（2.5x0.4）=2.33x1=2.33。 2.33x0.5x0.4x5的简便计算步骤： 因为...