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2.NBT.B.6

添加四个两位数

使用基于位值的策略将最多四个两位数相加。

年级水平: 二年级 · 领域: 十进制的数字和运算

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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