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在比较分数的大小中,当分子与分母的差相等或成倍数关系时,运用扣1减1的策略,常可收到出人意料的玫果.解:不难发现1997199819981999+1= 11998 11999+1二+1= 19819997一9898一99例1设。=199819991999200019981999+1一19971998+1一卫芝 9920002001则下列不等关系中正确的+‘一
In comparing the size of scores, when the difference between the denominator and the denominator is equal to or a multiple of the denominator, the strategy of deducting 1 minus 1 can often receive unexpected results. Solution: It is not difficult to find 1997199819981999+1= 11998 11999+1. Two +1 = 19819997 - 9898-99 cases 1 set. =199819991999200019981999+1 a 19971998+1 Yi Weizhi 9920002001 is the correct one in the following inequalities