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西西豆在马路上发现了一排数学算式,是什么人把算式写到了马路上呢?难道要让小朋友们天天练习口算吗?这些算式有什么特别的含义?顿顿猫和斯坦鼠知道其中的秘密,原来呀……你看完故事就知道了。
West beans in the road found a row of mathematical formulas, what people wrote the formula to the road? Do you want to let children practice every day? These formulas have any special meaning? Dayton cats and rats know which Secret, the original ah ... you know the story after reading.