口算 meaning in Chinese

chant out the result while doing the sums in one's head

Mental arithmetic competition games - 4455 miniclip games
口算比赛小游戏- 4399小游戏
The developmental study of schoolpupils ' mental arithmetic ability
小学生口算能力的发展研究
The experimental research on the ability of college student ' s mental arithmetic
大学生口算能力的实验研究
A study of the difference in time of pupils ' mental arithmetic on addition
小学生加法口算时间的差异性研究
Mental arithmetic competition games
口算比赛小游戏

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