Question

四分之三乘九分之二加三分之一简便算 （八分之七减三分之一）乘24 简便

Answer 1

3/4x2/9+1/3

=1/6+1/3

=1/6+2/6

=3/6

=1/2

(7/8-1/3)x24

=7/8x24-1/3x24

=21-8

=13