Cambridge Primary Mathematics Workbook 3 (2nd Edition) – Key Concepts Explained | 剑桥小学数学练习册3第二版知识点精讲

📚 Cambridge Primary Mathematics Workbook 3 (2nd Edition) – Key Concepts Explained | 剑桥小学数学练习册3第二版知识点精讲

Cambridge Primary Mathematics Workbook 3 (2nd Edition) is designed to help learners in Year 3 consolidate fundamental mathematical skills. This article provides a clear, topic-by-topic review of the key concepts covered in the workbook, enabling students and parents to understand and master each area with confidence.

剑桥小学数学练习册3（第二版）旨在帮助三年级学生巩固基础数学技能。本文将按主题逐一复习练习册中的关键知识点，涵盖数字、运算、几何、测量、数据处理和问题解决，帮助学生和家长深入理解并熟练掌握每个领域。

1. Numbers to 1000 | 数字到1000

Reading and writing numbers up to 1000: learners should be able to say, write in numerals, and write in words. For example, 467 is ‘four hundred and sixty-seven’.

阅读和书写1000以内的数字：学习者应能说出、写出阿拉伯数字和英文单词。例如，467写作“四百六十七”。

Counting on and back in steps of 1, 10, 100 from any starting number (e.g., from 380 count back in tens: 370, 360, …) builds number sense.

从任意数开始按1、10、100的步长正数或倒数（例如从380开始每次减十：370, 360,…）以培养数感。

Comparing and ordering numbers: use > and < symbols. Numbers with more hundreds are greater; if hundreds are equal compare tens, then ones. 532 < 541.

数字比较和排序：使用 > 和 < 符号。百位数字大的数更大；百位相同则比较十位，再比较个位。比如 532 < 541。

Place the numbers on a number line to see the order

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