2.71×7.4+27.1×3.6-2.71 巧算,
2.71×7.4+27.1×3.6-2.71 巧算,
2.71×7.4+27.1×3.6-2.71 巧算,
2.71×7.4+27.1×3.6-2.71 巧算,
2.71X(7.4+3.6)X10一2.71
2.71*(7.4+3.6-1)=2.71
显然运用的是乘法分配律:
2.71×(7.4+3.6-1)
=2.71×10
=27.1
2.71×(7.4+36-1)
收起
简单等我一下
2.71×7.4+27.1×3.6-2.71 巧算,
2.71×7.4+27.1×3.6-2.71 巧算,
2.71×7.4+27.1×3.6-2.71 巧算,
2.71X(7.4+3.6)X10一2.71
2.71*(7.4+3.6-1)=2.71
显然运用的是乘法分配律:
2.71×(7.4+3.6-1)
=2.71×10
=27.1
2.71×(7.4+36-1)
收起
简单等我一下