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算24
Author:
薛学忠
扑克牌算24点游戏，用加减乘除四则运算及括号，使结果为24
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異分母分數減法
算柱 (兩位數)
判斷球體
第八周作业
兩組對邊相等和有直角的四邊形
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圓形與相似形
幾何問題_圓01
長方形面積法 _單項式乘法
任意凸多边形的滚动
可拖动A、B 改变形状
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Constructions
Diagrams
Exponential Functions
Subtraction
Interest Calculation