-3.2×35.5+6.4×(-23.1)一0.32×183. 原式=? 注:请巧算!
问题描述:
-3.2×35.5+6.4×(-23.1)一0.32×183. 原式=? 注:请巧算!
-3.2×35.5+6.4×(-23.1)一0.32×183.
原式=?
注:请巧算!用简便方法!
答
-3.2×35.5+6.4×(-23.1)一0.32×183.
=-3.2X35.5+3.2X(-46.2)-3.2X18.3
=-3.2X(35.5+46.2+18.3)
=-3.2X100
=-320Thanks8K7