2.71×7.4+27.1×3.6-2.71 巧算,
网友回答
2.71X(7.4+3.6)X10一2.71
======以下答案可供参考======
供参考答案1:
2.71*(7.4+3.6-1)=2.71
供参考答案2:
显然运用的是乘法分配律:
2.71×(7.4+3.6-1)
=2.71×10
=27.1供参考答案3:
2.71×(7.4+36-1)
供参考答案4:
2.71×7.4+27.1×3.6-2.71 巧算,(图1)
供参考答案5:
简单供参考答案6:
=2.71x7.4+2.71x36-2.71 =2.71*43.4-2.71 =2.71*42.4
供参考答案7:
。供参考答案8:
115.175
供参考答案9:
7.5