实数的大小比较在中考和竞赛中经常遇到,很多同学感到困难。实数是初中数学教学的重要内容之一,同时也是学好其它知识的基础。 Comparison of real numbers in the senior high school entrance examination and competition are often encountered, many students feel difficult. Real number is one of the important contents of junior high school mathematics teaching, at the same time it is also the basis for learning other knowledge.