一年级两个班植树，一班植树43棵，二班植树36棵，两个班一共植树多少棵?+S1F1m/_6J4m4h0M+i(^1S3r
算式：提示7H(E1C5D+S1F1m/_6J4m4h0M+i(^1S3r
答：两个班一共植树9A,X/c1}2x)N6]5D7F.i6s/F4z:f6v9y棵。+S1F1m/_6J4m4h0M+i(^1S3r