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1.NBT.B.2

十位和个位

了解两位数的两位数字表示十和个的数量。

年级水平: 一年级 · 领域: 十进制的数字和运算

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与 0 对齐的游戏

通过这些免费游戏来练习这个标准。

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该领域的更多标准

十进制的数字和运算