数学 · 数的表示与位值 · 9

您的孩子在 9 岁左右正在学习数学中的数的表示与位值内容，并逐步掌握相关知识与技能。

Your child is working with larger numbers up to 1 million — understanding place value, rounding to different levels of accuracy, and beginning to work with negative numbers in everyday contexts.