72.8*4.5-72.8+72.8*6.5(简便运算)
来源:百度知道 编辑:UC知道 时间:2024/06/15 05:33:46
=72.8*4.5-72.8*1+72.8*6.5
=72.8*(4.5-1+6.5)
=72.8*10
=728
将
72.8*4.5-72.8+72.8*6.5
在www.google.com 里打出来`` 直接计算出结果
(72.8 * 4.5) - 72.8 + (72.8 * 6.5) = 728
(72.8 * 4.5) - 72.8 + (72.8 * 6.5)
=72.8(4.5+6.5)
=72.8*10
=728
=72.8*(4.5+-1+6.5)
=72.8*10
=728