“移花接木”原指嫁接花草树木 ,如果在数学解题中也适当地进行“嫁接” ,则可得巧妙的解法 .例 1　比较 1 2 33456 与1 34346 7的大小 .分析　若此题直接通分再比较大小 ,显然计算量太大 ,是行不通的 .仔细地观察这两个分数的特点 ,联系到应用题中的盐水问题的盐的质量分数的 “Grafted flowers and trees” originally referred to grafting of flowers and trees. If they are properly “grassed” in mathematics problems, they can get clever solutions. Example 1 Comparing the size of 1 2 33456 and 1 34346 7 Comparing the sizes, it is clear that the amount of calculation is too large to work. Look carefully at the characteristics of these two scores and relate to the salt quality scores of the saline questions in the application.