9787513129046 - 全10册 幼小衔接铅笔口算描红天天练 3-6岁加减法心算巧算速算汉字数字拼音 (1 risultati)

Oral arithmetic. mental arithmetic. addition and subtraction within 100. young cohesive pre-school must practice calculation exercises every day. pre-kindergarten to kindergarten children's textbook special training-win at the starting point(Chinese Edition)