“吃早饭啰!”只见奶奶从厨房里端出一盘煎饼。我急匆匆地坐下来,刚想拿起一个煎饼,妈妈却笑眯眯地拦住说:“别急,先让我考考你!”“小菜一碟,放马过来!”我胸有成竹地说。“那好,请仔细听!”妈妈不紧不慢地说,“煎饼沿直径对折后,在它的上面只能切三刀,你能切出五块到十三块吗?” “Eat breakfast!” I saw my grandmother from the kitchen out of a plate of pancakes. I hurriedly sat down, just want to pick up a pancake, my mother smiled and said: “Do not worry, let me test you! ” “Piece of cake, let the horse come!” I said . “Well, please listen carefully!” “Mom said unhurriedly, ” Pancake diametrically folded, it can only cut three knives, you can cut five to thirteen? "