78.6*990+78.6 /0.1简便运算
问题描述:
78.6*990+78.6 /0.1简便运算
答
78.6*990+78.6/0.1=78.6*990+78.6*10=78.6*(990+10)=78600
78.6*990+78.6 /0.1简便运算
78.6*990+78.6/0.1=78.6*990+78.6*10=78.6*(990+10)=78600