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0.258*447+258*0.678-25.8*1.25=?

题目详情
0.258*447+258*0.678-25.8*1.25=?
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答案和解析
0.258*447+258*0.678-25.8*1.25
=0.258*447+0.258*678-0.258*125
=0.258*(447+678-125)
=0.258*1000
=258