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2.8÷0.98________2.82.74÷1.5________2.74
2.8×0.98________2.87.15×100________7.15÷0.01.

>    <    <    =
分析:根据当被除数(不为0)除以一个小于1的数时,得到的商大于被除数,当除以一个大于1的数时得到的商就小于被除数,当除以一个等于1的数时得到的商就等于被除数,乘法则与之相反,据此解答即可得到答案.
解答:
2.8÷0.98>2.82.74÷1.5<2.74
2.8×0.98<2.87.15×100=7.15÷0.01.
故答案为:>,<,<,=.
点评:此题主要考查的是知识点:当被除数(不为0)除以一个小于1的数时,得到的商大于被除数,当除以一个大于1的数时得到的商就小于被除数,当除以一个等于1的数时得到的商就等于被除数,乘法则与之相反.
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