4又5分之1*25+32又7分之4/4+0.25*124

问题描述:

4又5分之1*25+32又7分之4/4+0.25*124

4又5分之1*25+32又7分之4/4+0.25*124
=4.2*25 + 32又7分之4*0.25+0.25*124
=420*0.25+32又7分之4*0.25+0.25*124
=(420+ 32又7分之4+124)*0.25
=576又7分之4*(4分之1)
=576*(4分之1)+ (7分之4)*(4分之1)
=144+ 7分之1
=144又7分之1