在数学中，加法是一种基本的算术运算，它表示将两个或多个数值合并在一起。当我们说1+2时，我们是在将数字1和数字2相加。 具体来说： - 数字1是1个单位。 - 数字2也是1个单位。 当我们将这两个单位相加时，我们实际上是在计算它们的总和。因此，1个单位加上另一个单位等于多少呢？答案是2个单位。 所以，1+2的结果是3。这是基于基本的数学原理，即加法的定义。
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- 作者:China-Hubei-Wuhan
- 日期:2025年2月20日 14:35
- 浏览:36
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