Question

135÷12.5 四十五分之四十四×37 27×二十六分之十五 有没有简便运算?

Answer 1

135÷12.5

=135÷25/2

=135*2/25

=27*2/5

=54/5

=10+4/5

=10+0.8

=10.8

44/45*37

=(1-1/45)*37

=37*1-37*1/45

=37-37/45

=36+8/45

=36又8/45

27*15/26

=(26+1)*15/26

=26*15/26+1*15/26

=15+15/26

=15又15/26