明明的前面有8个小朋友,后面有10个小朋友,一共有多少个小朋友?;N9G'I0^(k
算式:提示7z'K1f.l.[*?*k8D0Y2|9m*i;N9G'I0^(k
答:一共有*R5]7k2p7{(@,M9i5l.['Z个小朋友。;N9G'I0^(k