25×4÷5×4-80=120.
×
×
分析:按照從左到右的順序計算前面的乘除法,最后算減法,求出結果與120比較即可.
解答:解:25×4÷5×4-80,
=100÷5×4-80,
=20×4-80,
=80-80,
=0;
0<120;
故答案為:×.
點評:1、如果是同一級運算,一般按從左往右依次進行計算;2、如果既有加減、又有乘除法,先算乘除法、再算加減.
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