About this ebook
本書特色
1、奠定孩子全方位的減法技巧。
2、內容由教育專家設計、審訂。
3、題目設計由淺入深，循序漸進的教導孩子。
4、題目豐富完整，學習效果好。
◎適讀年齡：5〜8歲
1、奠定孩子全方位的減法技巧。
2、內容由教育專家設計、審訂。
3、題目設計由淺入深，循序漸進的教導孩子。
4、題目豐富完整，學習效果好。
◎適讀年齡：5〜8歲
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