开学第一个星期的星期天,我正在思考“3×36=?”这个算式的算法。开始,我认为只要,3+36+36就可以了。我把这个算法告诉了妈妈,妈妈却说“;虽然可以算出答案,但是这样算太麻烦了,再想想看怎样可以算得又快又准?”我歪着脑袋使劲地想啊想,想了很久,就在我要准备放弃的时候,突然想到了一个算得又快又准的办法。个位,3×6=18,十位,3×30=90,得数是90+18=108,我赶紧把这个好消息告诉妈妈。妈妈笑着说:“对, On the first Sunday of the school year, I was thinking about the algorithm of ”3 × 36 =?“ At first, I think as long as 3 + 36 + 36 is OK. I told this algorithm to my mother, but my mother said, ”Although we can figure out the answer, it would be too troublesome, and then think about how to calculate it quickly and accurately.“ ”I tilted my head hard to think, think For a long time, when I was about to give up, I suddenly thought of a quick and accurate way. A bit, 3 × 6 = 18, ten, 3 × 30 = 90, the number is 90 + 18 = 108, I quickly told the good news to the mother. Mother smiled and said: "Yes,