脱式计算，能简便的要用简便方法计算．
0.36×1.5×0.4              0.05×3.2×40             26×15.7+15.7×74
3.78×0.5﹣0.65             3.98+13.4×0.24          （9.37+9.37+9.37+9.37）×2.5．