Most of these are probably self-explanatory, like addition, subtraction, multiplication and division.

其中大多数可能都是不言自明的，比如加法、减法、乘法和除法。

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When do we use multiplication and division?

什么时候我们用乘法和除法?。

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Math Ninja offers drills on multiplication and division.

“数学忍者”提供乘除运算的练习。

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It's really the multiplication and in this case, division that the problem arises. Yeah?

这里实际上是乘法和，除法引起了那个问题，请说？

哈佛公开课 - 计算机科学课程节选

Just as in grade school when you're doing division and multiplication, you do it from left to right in terms of order of operations.

正像是在小学你做除法和乘法的时候,你毫不含糊地从左到右,按顺序做运算。

哈佛公开课 - 计算机科学课程节选

Most of these are probably self explanatory, addition, subtraction, multiplication, division, and anyone?

其中很多都不需要加以说明的，像加号，减号，乘号，除号和？

哈佛公开课 - 计算机科学课程节选

Multiplication and division were also possible (though very difficult to execute).

CNN: Vintage tech 'firsts,' including Apple 1, up for auction

The basic concepts of addition and subtraction, place value, multiplication and division, and how they relate to each other, need to be understood before children can go any further in the subject, he says.

BBC: Primary maths plan threatens 'too much too soon'

The draft primary curriculum for maths, due to be introduced in schools next year, contains plans for pupils to memorise their times tables up to 12 by age nine, multiply and divide fractions by age 11, as well as learn topics such as geometry, long division and multiplication and decimals.

BBC: Primary maths plan threatens 'too much too soon'