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一个星期天的上午,爸爸让小军做一道题:将一根圆木锯成长度为5分米的小段,共用了5分钟。已知每锯一小段要1分钟,这根圆木的长为多少分米?小军看过题目,就这样思考:这根圆木锯成的5分米长的小段,每锯一小段要1分钟,反过来说,就是1分钟锯一小段,那么,5分钟就锯了5小段。因此,这根圆木的长就是5×5=25(分米)。小军把解题过程给爸爸看,爸爸摇摇头说:“你没有注意到锯木料
One Sunday morning, my father asked the little army to make a single question: a log was cut into 5-meter segments for a total of 5 minutes. Known for each saw a short section of 1 minute, the length of the log for how many decimetre? Xiaojun read the title, so think about it: This log log into a 5-meter-long section, each saw a small section 1 minute, on the other hand, saw it for a minute, then saw it for 5 minutes in 5 minutes. Therefore, the length of the log is 5 × 5 = 25 (decimeters). Small army to solve the problem to father, Dad shook his head and said: ”You did not notice the sawn timber