6.4×0.25+3.6÷4(过程)

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6.4×0.25+3.6÷4(过程)
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6.4×0.25+3.6÷4(过程)
6.4×0.25+3.6÷4(过程)

6.4×0.25+3.6÷4(过程)
=1.6+0.9=2.5

2.5

1.6+0.9=2.5

=6.4*0.25+3.6*(1/4)
=6.4*0.25+3.6*0.25
=0.25*(6.4+3.6)
=0.25*10=2.5
望采纳亲

原式=1/4X(6.4+3.6)
=1/4X10
=5/2
望采纳,谢谢