Recently, a study showed that bees could perform arithmetic operations like addition and subtraction.

最近一项研究表明，蜜蜂可以进行加减法的运算。

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PHP also has automatic type conversion for arithmetic operations.

PHP还有用于算术运算的自动类型转换。

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Rather than arithmetic operations (as explored earlier), you'll find set and clear operations.

跟前面提到的算术操作不一样，它只包含设置和清除操作。

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Or another way of saying it is, we're going to use as the basic steps, those operations that run in constant time, so arithmetic operations.

我们用可以在恒定时间内完成的操作,算法，比较,内存读取。

麻省理工公开课 - 计算机科学及编程导论课程节选

So we're to assume we can get to any piece of data, any instruction in constant time, and the second assumption we're going to make is that the basic primitive steps take constant time, same amount of time to compute. Again, not completely true, but it's a good model, so arithmetic operations, comparisons, things of that sort, we're all going to assume are basically in that in that particular model.

因此如果我们假设在恒定的时间内,我们可以取得任何一块数据,任何一种数据结构的话,我们要做的第二个假设就是,基本的原始操作计算花费的时间是恒定的,这个假设也不是完全正确的，但这个模型其实挺不错的，因此算法操作，比较，这一类的事情，我们在这个特定的模型中都假设是基本的,操作，花费的时间是恒定相同的。

麻省理工公开课 - 计算机科学及编程导论课程节选

When teaching numeracy, the facilitators focus on teaching numbers and the idea of quantity, grouping and interpretation of measurement units, arithmetic operations, special forms and orientation, and content interpretation, such as reading tables and graphics.

UNESCO: Country Profile: Chile

Prior to the beginning of classes, learners are required to take an assessment test aimed at verifying their entry knowledge on basic literacy and numeracy through the identification of letters, syllables, words, sentences, numbers, arithmetic operations and writing down their personal details.

UNESCO: Z�� Pe?o School Project

The majority of the sample was able to perform as high as level four (out of five) of the literacy test, meaning they were able to read, comprehend and answer questions about a simple text, and level three in numeracy, i.e. they were able to perform basic arithmetic operations.

UNESCO: Country Profile: Angola