红星村去年栽果树350棵,今年,又栽了200棵杨树和170棵柳树,今年栽的树比去年栽的树多多少棵?4a5Z/q6Z1x'C,{4]
算式:提示7L/Z:v+n4a5Z/q6Z1x'C,{4]
答:今年栽的树比去年栽的树多*w8?6A8}5d:x)P棵。4a5Z/q6Z1x'C,{4]