3.42*2.58+6.42*3.42+3.42 简便运算
问题描述:
3.42*2.58+6.42*3.42+3.42 简便运算
答
3.42*(2.58+6.42+1)=3.42*10=34.2
答
3.42*2.58+6.42*3.42+3.42
=3.42×(2.58+6.42+1)
=3,42×10
=34.2