7/13×8/36+7/13×17/36+11/36×7/13
解题思路:简便运算核心是运用加法和乘法各种定律进行计算,计算出整数部分方便后续计算的过程
解题过程:
7/13×8/36+7/13×17/36+11/36×7/13=
7/13×(8/36+17/36+11/36)=
7/13×1=7/13
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简便方法计算看图,
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8/13×7/36+7/13×17/36+11/36×7/13
=7/13×8/36+7/13×17/36+11/36×7/13
=7/13×(8/36+17/36+11/36)
=7/13×1
=7/13