(2.67+2.67ⅹ2+2.67）x25
=2.67x4x25
=2.67x（4x25）
=2.67×100
=267
谢谢，请采纳
(2.67+2.67*2+2.67)*5
=2.67*(1+2+1)*5
=2.67*4*5
=2.67*20
=53.4
简便运算
(2.67+2.67ⅹ2+2.67丿Ⅹ25
=2.67×（4×25）
=2.67×100
=267
=2.67x（1+2+1）x25
=2.67x4x25
=2.67x100
=267
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