Common Mistakes in OxfordAQA 9660 MA02 June 2023 | 牛津AQA 9660 MA02 2023年6月考试易错点分析

📚 Common Mistakes in OxfordAQA 9660 MA02 June 2023 | 牛津AQA 9660 MA02 2023年6月考试易错点分析

The OxfordAQA International GCSE Mathematics (9660) Paper 2 (MA02) from the June 2023 session assessed a range of topics with a calculator. Analysis of student scripts reveals several recurring pitfalls that cost valuable marks. This article highlights those common errors and explains how to avoid them, reinforcing essential techniques for future exams.

2023年6月牛津AQA国际GCSE数学（9660）试卷二（MA02）使用计算器，涵盖广泛主题。分析考生答卷发现，一些反复出现的错误导致严重失分。本文总结这些常见易错点，解释如何规避，并强化关键解题技巧，为未来考试做好准备。

1. Calculator Mode and Rounding | 计算器模式与舍入误差

Many students lost marks by not ensuring their calculator was in degree mode for trigonometric calculations. For example, evaluating sin 30° in radian mode gives –0.988 instead of 0.5. Always check the mode indicator before starting. Additionally, premature rounding of intermediate results led to inaccurate final answers. When a question requires a final answer to 3 significant figures, intermediate values should be stored in the calculator memory or written to at least 4 significant figures before continuing.

许多考生因为没有确保计算器处于角度模式（度）而丢分。例如，在弧度模式下计算 sin 30° 会得到 –0.988，而不是 0.5。开始答题前务必检查模式指示符。另外，提前对中间结果进行舍入会导致最终答案不准确。如果题目要求最终答案保留三位有效数字，应先将中间值存入计算器记忆，或至少保留四位有效数字再继续计算。

A related mistake was forgetting to clear previous calculations stored in memory functions, which caused unintended numbers to affect later steps. Regularly resetting or clearing memory before tackling a new problem is a good habit.

另一个相关错误是忘记清除存储在记忆功能中的之前计算，导致意外数字影响后续步骤。在解答新问题前定期重置或清除记忆是一个好习惯。

2. Algebraic Fraction Simplification | 代数分式化简

When simplifying expressions like (x² – 4)/(x – 2), many students correctly factorised the numerator to (x + 2)(x – 2) but then cancelled the (x – 2) term without noting that x ≠ 2. While the simplified expression is x + 2, it is vital to state the restriction, especially in a ‘show that’ question. Another error involved splitting a fraction incorrectly, such as treating (a + b)/c as a/c + b, which is incorrect unless b is also divided by c.

化简如 (x² – 4)/(x – 2) 的表达式时，许多考生能够正确将分子因式分解为 (x + 2)(x – 2)，但约去 (x – 2) 时没有注明 x ≠ 2。虽然简化结果为 x + 2，但在“证明”类题目中，指出定义域的限制至关重要。另一个错误是错误地拆分分式，例如将 (a + b)/c 当成 a/c + b，而应该是 a/c + b/c，除非 b 也除以 c。

In addition, some students cancelled common terms incorrectly in more complex fractions like (3x + 6)/(x + 2), wrongly

Published by TutorHao | Mathematics Revision Series | aleveler.com

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