Question

植樹(shù)節(jié)，小明種樹(shù)棵數(shù)比小聰多x%，則小聰種樹(shù)的棵數(shù)比小明少

 

%．

Answer 1

分析：所求的百分比=小聰種樹(shù)比小明少的棵樹(shù)÷小明植樹(shù)棵樹(shù)．

解答：解：本題考查列代數(shù)式，注意題中小明比小聰多x%，設(shè)小聰植樹(shù)a棵，則小明植樹(shù)為（1+x%）a；
小明比小聰多植樹(shù)（1+x%）a-a，所以小聰比小明種樹(shù)棵樹(shù)少

(1+x%)a-a

(1+x%)a

100%=

100x

100+x

%．
故答案為：

100x

100+x

．

點(diǎn)評(píng)：本題要分析好小明植樹(shù)棵樹(shù)與小聰植樹(shù)棵樹(shù)之間的關(guān)系．解決問(wèn)題的關(guān)鍵是讀懂題意，找到所求的量的等量關(guān)系．