During these steps, some digits are selected for specific roles ( e.g., first addend) in the addition operation, while the others are held in working memory, but not used in the current operation.

  • 在这些心算步骤中,每个时刻只有一些数字被特殊地选择用于加法运算的被加数,而其他的数字则仅仅保存在工作记忆中并不用于当前操作。

  • 互联网摘选 2025-01-19 23:57:29

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