36ⅹ(456÷57十219)的括号的简便运算怎么做?解: 36Ⅹ(456÷57+219) =36X(8+219) =36x227 =8172
36*(456÷57+219)=36*(8十219)=36*227=36*(230-3)=36*230-36*3=8280-108=8172