Question

九又五分之二沉四百二十五加四点二五除以六十分之一,等于几?要简便算法

Answer 1

(9+2/5) * 425 + 4.25 / (1/60)

=(9+2/5) * 425 + 4.25 * 60

=(9+2/5) * 425 + 4.25 * 60 * 100 / 100

=(9+2/5) * 425 + 425 * 0.6

=(9+2/5+0.6) * 425

=42500