数学课上,张老师问:“最近我们学习了有关正负数的知识,你们都学会了什么呢?”快言快语的李华抢着说:“我知道如果把向东走100米记作‘+100米’,那么向西走100米就记作‘-100米’。”数学课代表周超接着说:“我会比较正负数的大小。在数轴上,左边的数都比右边的数小,如:‘-5’小于‘-2’,‘0’小于‘+4’,‘+6’小于‘+8’。” In math class, Teacher Zhang asked: “Recently we learned about positive and negative numbers and what did you learn?” “Quietly speaking, Li Hua is rushing to say:” I know that if I go eastward 100 meters recorded as ’+100 meters’, then go west 100 meters is recorded as ’-100 meters.’ “Mathematics class Zhou Chao said:” I will compare the size of the positive and negative numbers in the number of axes, The numbers on the left are smaller than the numbers on the right, such as ’-5’ less than ’-2’, ’0’ less than ’+4’ and ’+6’ less than ’+8’. "