第5讲 比和比例 视频课程
第5讲 比和比例
视频时长
30 分钟
建议学时
3-4 小时
语言
中文
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学习目标
- Understand and use ratio notation, including dividing quantities and combining ratios.
- Define, interpret, and calculate with percentages, including percentage change, original values, and applications like simple interest.
- Understand and use direct and inverse proportion, including their algebraic and graphical representations, and solve related problems.
- Apply concepts of scale factors and similarity to compare lengths, areas, and volumes.
- Solve problems involving real-world applications of ratios, proportions, and percentages such as mixtures, conversions, and concentrations.
- Set up and interpret solutions to growth and decay problems, including compound interest.
