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解答分数的大小比较问题,除了掌握常规的分母化相等比较分子的方法外,还应掌握一些其它的方法,略述如下.一、利用分子化相等比较例1有理数-3/11、-5/19、-6/23中,用“>”号将它们连接起来为.解析利用分母化相等比较分子的方法,运算量太大,此法不可取.注意到已知三个分数分子的最小公倍数较小,仅为30,故考虑利用分子化相等的方法.
In addition to the conventional method of denominator equalization of comparative molecules, there are a number of other methods that should be grasped as follows: 1. Use of the Equalization Comparison Example 1 Rational numbers -3 / 11, -5 / 19, -6 / 23, connect them with “> ”. To parse the method of using the equalization of denominator to compare molecules, the calculation is too large, this method is not advisable.Note that the three known fractional molecules The smallest common multiple is only 30, so consider the use of molecular equalization method.