Multiplications and divisions are really just many additions and subtractions.

乘法和除法实际上只是许多加法和法累积。

Math often builds on a set of basic skills like addition, subtraction, multiplication and division.

基础技能不外乎加乘除。

Not long ago, researchers learned that 4-day-olds could understand addition and subtraction.

不久前，研究人员了解到4天孩子可以明白加法。

To decarbonise an economy is not a simple subtraction; it requires a near-complete overhaul.

济脱碳不是简单法;这需要近乎彻底改革。

Addition and subtraction are both part of math equations.

加法两者都是方程式部分。

Subtraction is not just about removing day-to-day distractions.

法不仅仅是去日常生活中干扰。

Additions or subtractions to our external circumstances make very little difference.

增加或少外部环境 产生区别很小。

And a little bit about pOH, which can be calculated with logarithms, also with subtraction.

它们通常也有很低pH值。

Where do you stand on addition, subtraction, multiplication and division?

你加法与法乘法与除法是什么情况？

Can you do some subtraction for me?

你能帮我做法吗？

Firms are not always opposed to subtraction.

公司并不总是反对法。

If it's addition or subtraction it's only the number of figures after the decimal point that matters.

第，它告诉你已测量据是多少。 第二，它告诉你这个值是测量到多精准。

But scientists have found that other animals, such chimpanzees, monkeys, and even pigeons can perform some addition and subtraction.

但科家发现，黑猩猩、猴子、甚至鸽子等其它动物也能做加法和法。

This spectrum subtraction is what happens as sunlight interacts with the elements in the sun's atmosphere and in earth's atmosphere too.

当太阳光与太阳大气中元素以及地球大气中元素相互作用时，就会发生频谱相。

ENIAC could perform 5000 ten-digit additions or subtractions per second, many, many times faster than any machine that came before it.

ENIAC 每秒可执行 5000 次十位加法，比它前辈快很多很多倍。

Math skills such as addition, subtraction, multiplication and division should already be mastered.

应该已掌握了加乘除等技能。

Circuits can be combined to perform complex operations, like addition and subtraction.

可以组合电路来执行复杂运算，例如加法和法。

I just can't seem to get the rules straight for addition, subtraction, multiplication and division.

我似乎无法直接理解加法、法、乘法和除法规则。

I think of addition and subtraction as on a number line.

我认为加法和法就像在轴上样。

'A lot of subtraction, too, ' he said, dryly.

“还有很多法，”他冷冷地说。