4/9×[0.75-(7/16-0.25)] 能简便就用简便方法计算
问题描述:
4/9×[0.75-(7/16-0.25)] 能简便就用简便方法计算
答
4/9×[0.75-(7/16-0.25)]
= 4/9×[0.75-7/16+0.25]
= 4/9×[1-7/16]
=4/9×9/16
=1/4