Singapore math level 5, 6; 中文三年级上册数学; 练习册

$30 for all 8 books (shipping included) please note my kid has written on less than 10 pages on a few books, but won't be a problem to read and practice.
anyone interested?

这个新数貌似不是版上一般说的新数？

我想要这些书，mm看短消息