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(1)1.125________2数学公式
(2)337.5%________数学公式

解:(1)1.125<2
(2)337.5%<
故答案为:<,<.
分析:(1)先把分数化成小数,再进行比较大小,2=2.25,1.125<2.25,
(2)把百分数化成小数,把分数化成小数,再比较大小,337.5%=3.375,=4.5,3.375<4.5.
点评:在小数、分数、百分数在比较大小时,一般要化成小数再比较大小.
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