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数学
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预代数
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数轴
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分数
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Topics in 分数
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1
什么是分数?
2
斜率/变化率
3
加&减分数
4
乘以和除以分数
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绝对值是什么?
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The Number Line and Cartesian Plane
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数轴
实数和数轴
加,乘,&除
绝对值是什么?
分数
The Number Line and Cartesian Plane
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