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13问答网 > B1 根据树状算图列式计算．

B1 根据树状算图列式计算．

2025-03-15 20:37:34

推荐回答（1个）

回答1：

分析：根据树状图逐步求解，找出运算的顺序，再列出综合算式．树状图如下：列式为：12×（206-197）+52，=12×9+52，=108+52，=160．点评：解决本题关键是根据分式，找出运算的顺序，再根据运算顺序列出算式．

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