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减法的累积。

Addition and subtraction are both part of math equations.

加减法两者都是数学方程式的一部分。

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天的孩子可以明白加减法。

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

但科学家发现，黑猩猩、猴子、甚至鸽子等其它动物也能做一些加法和减法。

Addition and subtraction exist as two sides of the same coin.

加法和减法就像一枚硬币的两面一样存在。

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

我认为加法和减法就像在数轴上一样。

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

可以组合电路来执行复杂的运算，例如加法和减法。

From addition and subtraction to the entire YouTube algorithm, it can do anything a modern computer can.

从加减法到整个 YouTube 算法，它可以完成现代计算机可以完成的任何操作。

It can help us in everyday activities such as using addition and subtraction to calculate how much money we need for our shopping.

它可以帮助我们进行日常活动，例如使用加法和减法来计算我们购物需要多少钱。