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What is the size of the exercise book?
The workbook is as follows:

International standard formats are: folio, 16, 32 and 64.

The exercise book is generally 16, which means A4 (16k) 297mm× 210mm. There are a5 (32k) 210mm×148mm, a6 (64k)144mm×105mm, A2(2k)420mm×594mm and so on.

Introduction:

Exercise books refer to books specially used by students or other learners to do homework and exercise books usually used as auxiliary teaching materials. For example, classroom exercise books, such as math books, foreign language books and composition books, are sometimes used as draft books. Some highly specialized technical work or complex work needs to record data in detail; A special notebook for recording operating procedures is also called "exercise book".