Question

4分之3乘6分之5加4分之3乘6分之1 简便运算,

Answer 1

(3/4)*(5/6)+(3/4)*(1/6)

=(3/4)*(5/6+1/6)

=(3/4)*1

=3/4

利用结合律a*(b+c)=ab+ac,本题利用结合律的逆运算即可