,第 3 单元 加 与 减(一),第 8 课时 小 鸡 吃 食,9,1,10,9,8,7,6,5,5,6,4,7,3,8,2,9,1,10,0,7,3,3,7,爬台阶。,7,5,10,6,4,10,10,10,2,4,6,8,10,1,3,5,7,9,说一说,做一做。,把1,2,3,4,5,6,7,8这8个数分别填入 中。,1,8,2,7,3,6,4,5,
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