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美国数学竞赛AMC8
排列组合(permutation and combination)
小测验-排列组合1
尺规作图Compass-and-straightedge
尺规作图-正三边形
尺规作图-正四边形
尺规作图-正五边形
尺规作图-正六边形
尺规作图-正七边形(近似)
尺规作图-正八边形
尺规作图-正九边形(近似)
三角形内心、外心、重心、垂心、旁心、费马点
数论(number theory)
数论一
数论一小测验
数字填空小测验
Perimeter and Area 周长与面积
vocabulary
Basic Formulas for Perimeters and Area 周长与面积的基本公式
factorial
the song from Pi
17sides
Patterns
ratio
平行四边形
factorization by cross method
因式分解(Divisibility)
整式乘除
整式乘除小测验
平面直角坐标系
平面直线方程
直角坐标系-小测验
Operation with Fractions
Even and Old
Word Problems Related to Percentage
Transformations
consecutive integers
operations with Decimals
Set and Venn Diagrams
counting Techniques
Geometric Visualization
Factors
Prime Numbers
Ratio,Rate and Proportion
比例习题1
Least common Multiple and Greatest Common Factor
solving Equations
Special Symbols and Operations
Remainders
Sequences and Series
Functions
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Ratio,Rate and Proportion

  1. 美国数学竞赛AMC8
  2. Ratio,Rate and Proportion
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比例习题1
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