72÷18+1,
=4+1,
=5(楼);
答:小敏家住5楼.
故答案为:5.
每上一层楼梯要走18级台阶,到小明家要走72级台阶,小明家住在_楼.
每上一层楼梯要走18级台阶,到小明家要走72级台阶,小明家住在______楼.
数学人气:812 ℃时间:2019-09-22 09:15:59
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