分数乘法（11岁以上）
Multiplying fractions (age 11+)
将分数和百分数理解为运算符——通过乘法求一个数量的几分之几或百分之几，理解“的”表示乘法（例如，200的3/4 = 3/4 × 200 = 150）。
Interpret fractions and percentages as operators — find a fraction or percentage of an amount by multiplying, understanding that 'of' means multiply (e.g., 3/4 of 200 = 3/4 × 200 = 150)
学习证据 / Evidence
- 通过乘法计算一个给定数量的几分之几
- 通过将百分数转换为小数并相乘，计算一个给定数量的百分之几
- 运用运算符解释来解决涉及折扣、税费和部分量的多步骤问题
- Calculate a fraction of a given amount by multiplying
- Calculate a percentage of a given amount by converting to a decimal and multiplying
- Use the operator interpretation to solve multi-step problems involving discounts, taxes, and portions
评估问题 / Assessment
如果一件120英镑的夹克降价35%，{{name}}能否先算出120英镑的35%，再相减，从而得出售价？
If a £120 jacket is reduced by 35%, can {{name}} work out the sale price — by first calculating 35% of £120 and then subtracting?