There were significant differences of problem types in primary school children's computational estimation competence.

从现状上看，小学儿童的估算能力存在非常明显的题目类型差异。

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There were significant differences of problem types in primary school children's computational estimation competence.

从现状上看，小学儿童的估算能力存在非常明显的题目类型差异。

youdao