7.5╳0.25 2.5÷4简便 方法?

2024-12-02 05:18:15
推荐回答(1个)
回答1:

7.5×0.25+2.5÷4
=7.5×0.25+2.5×1/4
=7.5×0.25+2.5×0.25
=(7.5+2.5)×0.25
=10×0.25
=2.5
本题主要运用了乘法分配律的逆运算。