小猴家的一棵桃树上结了许多桃子,猴妈妈让小猴数数这棵树上一共结了多少个桃子。小猴数来数去,就是数不准。他一会儿数38个,一会儿数39个,一会儿又数42个。“妈,怎样才能把树上的桃子数对呢?”小猴问。猴妈妈告诉小猴:“你数的方法容易数多,也容易数少。你可以换一种方法。我这里有45根红丝带,你在每个桃子上系一根,系完后数数剩下多少根,再算算用去的红 A peach monkey at home a lot of peach trees, monkey mother let the monkey count the number of trees on the tree a total of how many peaches. Count the number of the monkey to go, is not allowed. He counted 38 for a while, 39 for a while and 42 for a while. ”Mom, how can the number of peaches on the tree right? “ Monkey asked. The monkey mother told the monkey: ”You count the number of ways easier, but also easy to count less.You can change the way.I have 45 red ribbons, you are a peach on each department, after the completion of the number The number of the remaining number of roots, and then used to calculate the red