3.86×0.25+6.14÷4 如何简便运算?

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3.86×0.25+6.14÷4 如何简便运算?
3.86×0.25+6.14÷4 如何简便运算?

3.86×0.25+6.14÷4 如何简便运算?
3.86×0.25+6.14÷4
=3.86x0.25+6.14x0.25
=0.25x(3.86+6.14)
=0.25x10=2.5

3.86×0.25+6.14÷4
=3.86×1/4+6.14×1/4
=(3.86+6.14)×1/4
=10×1/4=2.5
祝你好运

把4改为0.25,就很容易得出结果是2.5