📚 7S Homework Contents List | 7S 数学作业内容清单
This revision guide presents a complete contents list for the 7S mathematics homework programme. It organises the key topics into twelve manageable sections, each with the essential skills, common question types, and useful study tips. Use the list as a checklist to track your progress and identify areas for further practice.
本复习指南呈现 7S 数学作业计划的完整内容清单。它将关键主题分为十二个易于掌握的模块，每个模块都列明核心技能、常见题型和实用学习提示。请将本清单用作进度检查表，以跟踪学习进展并找出需要进一步练习的薄弱环节。
1. Number and Place Value | 数与位值
Work in this section covers reading, writing, ordering and comparing whole numbers, decimals and negative numbers. Students learn to identify place value, round to any specified accuracy, and use estimation to check answers.
本部分的作业涵盖整数、小数和负数的读法、写法、排序与比较。学生将学习识别位值、按要求精度进行四舍五入，并利用估算检查答案。
A typical homework set asks learners to round 5,643 to the nearest 100, write the value of the digit 7 in 4,782,309, and arrange -7, -2, 0, 3, 5 on a number line. These tasks build fluency with large numbers and signed numbers.
一套典型的作业会要求学生将 5,643 四舍五入到最近的百位，写出 4,782,309 中数字 7 的值，并在数轴上排列 -7、-2、0、3、5。这些任务帮助建立大数和带符号数的运算流利度。
- Identify place value up to 1,000,000,000 | 识别最大到 1,000,000,000 的位值
- Round 5,643 to the nearest 100 | 将 5,643 四舍五入到最近的百位
- Order negative and positive numbers | 排列负数和正数
4,782,309 = 4 × 10⁶ + 7 × 10⁵ + 8 × 10⁴ + 2 × 10³ + 3 × 10² + 0 × 10¹ + 9 × 10⁰
2. Four Operations | 四则运算
This section consolidates mental and written methods for addition, subtraction, multiplication and division. Homework includes long multiplication, short and long division, and word problems that require choosing the correct operation.
本节巩固加减乘除的心算与笔算方法。作业包括长乘法、短除法和长除法，以及需要选择正确运算的文字题。
Students must also apply the order of operations correctly, often remembered as BIDMAS or BODMAS. Questions such as 3 + 4 × 5 must be solved as 3 + (4 × 5) = 23, not (3 + 4) × 5 = 35.
学生还必须正确运用运算顺序，通常记忆为 BIDMAS 或 BODMAS。例如 3 + 4 × 5 应按 3 + (4 × 5) = 23 计算，而不是 (3 + 4) × 5 = 35。
- Multiply 234 × 36 using a
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