subtraction

简明释义

英[səbˈtrækʃn]美[səbˈtrækʃn]

n. 减去；（数）减，减法

复 数 s u b t r a c t i o n s

英英释义

单词用法

同义词

反义词

例句

1.And that brings us to the point of subtraction of vectors.

同时也是，矢量相减的原理。

2.Sums involving two-digit numbers or multiplication or subtraction were beyond him.

当加法的和是一个两位数或做乘法和减法时，查尔斯便无能为力。

3.Pressing return a couple more times will show an addition and subtraction.

再按两次回车将显示加法和减法表达式。

4.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。

5.The trees cut down are counted as income but no subtraction is made for using up the forests.

砍伐的树木被算作收入，但被耗尽的森林资源却没有计入损失。

6.Some of this work's been done at Yale in Karen Wynn's lab, where they look at babies' understanding of addition and subtraction.

其中一些研究是在耶鲁大学的凯伦·韦恩实验室完成的，他们在那里观察婴儿对加法和减法的理解。

7.In accounting, subtraction helps determine profit by subtracting expenses from revenue.

在会计中，减法通过从收入中减去费用来帮助确定利润。

8.Children often struggle with subtraction until they practice regularly.

孩子们通常在练习减法之前会感到困难。

9.When you perform subtraction, you need to line up the numbers correctly.

进行减法时，需要正确对齐数字。

10.The teacher explained that subtraction is the opposite of addition.

老师解释说，减法是加法的反义词。

11.In mathematics, subtraction is the process of taking one number away from another.

在数学中，减法是从一个数字中减去另一个数字的过程。

作文

In mathematics, subtraction is one of the fundamental operations that we learn at a very early age. It involves taking away a certain number from another number, resulting in a difference. The concept of subtraction (减法) is essential not only in arithmetic but also in various aspects of daily life. For instance, when you go shopping and need to calculate how much money you have left after purchasing an item, you are essentially performing a subtraction operation. Let’s consider a simple example: if you have ten apples and you give away three, you would perform the operation 10 - 3, which equals 7. This straightforward calculation illustrates how subtraction can help us understand quantities in our everyday experiences. The ability to subtract is crucial for budgeting, cooking, and even planning events. As we progress in our education, the concept of subtraction becomes more complex. We begin to encounter negative numbers, fractions, and decimals, all of which require a solid understanding of subtraction to solve problems accurately. For example, if you have a temperature of 5 degrees and the temperature drops by 8 degrees, the calculation would be 5 - 8, resulting in -3 degrees. This introduces the idea that subtraction can lead to values less than zero, which is a critical concept in both mathematics and real-world applications. Moreover, subtraction can also be viewed from a theoretical perspective. In abstract algebra, for instance, subtraction is related to the concept of inverses. Every number has an additive inverse, which is the number that, when added to it, results in zero. However, in the case of subtraction, we often think of it in terms of removing or decreasing. This duality in understanding enhances our grasp of mathematical principles. In practical scenarios, subtraction plays a vital role in data analysis. Businesses frequently utilize subtraction to determine profit margins. By subtracting costs from revenues, they can ascertain how much they earn from their sales. This is crucial for making informed decisions about pricing, inventory management, and overall financial health. Additionally, subtraction can be applied in technology, especially in programming and algorithms. When coding, developers often need to manipulate data sets, and subtraction is a common operation used to filter or analyze data. For example, if a program needs to determine how many users have unsubscribed from a service, it would subtract the current number of subscribers from the original number. In conclusion, the operation of subtraction (减法) is not just a mathematical concept; it permeates various aspects of our lives. Whether we are managing our finances, analyzing data, or simply trying to understand the world around us, subtraction serves as a fundamental tool that helps us make sense of quantities and relationships. Mastering subtraction is essential for academic success and practical problem-solving, making it a crucial element of our educational journey.

在数学中，减法是我们在很小的时候就学习的基本运算之一。它涉及从一个数字中减去某个数字，从而得出一个差值。减法（subtraction）的概念不仅在算术中是必不可少的，而且在日常生活的各个方面也同样重要。例如，当你去购物，需要计算在购买一件物品后剩下多少钱时，你实际上是在进行一次减法运算。让我们考虑一个简单的例子：如果你有十个苹果，而你送走了三个，那么你将进行10 - 3的运算，结果是7。这个简单的计算说明了减法如何帮助我们理解日常生活中的数量。能够进行减法对预算、烹饪甚至活动策划都是至关重要的。随着我们在教育上的进步，减法的概念变得更加复杂。我们开始遇到负数、分数和小数，这些都需要对减法有扎实的理解，以便准确解决问题。例如，如果你有5度的温度，而温度下降了8度，那么计算将是5 - 8，结果为-3度。这引入了一个概念，即减法可以导致小于零的值，这是数学和现实应用中的关键概念。此外，从理论角度来看，减法也可以被视为一种抽象代数中的概念。在抽象代数中，减法与逆元素的概念有关。每个数字都有一个加法逆元素，即加上它会得到零的数字。然而，在减法的情况下，我们往往认为它是去除或减少。这种理解的二元性增强了我们对数学原理的把握。在实际场景中，减法在数据分析中发挥着重要作用。企业经常利用减法来确定利润率。通过从收入中减去成本，他们可以确定从销售中赚取多少。这对于做出关于定价、库存管理和整体财务健康的明智决策至关重要。此外，减法还可以应用于技术，尤其是在编程和算法中。当编写代码时，开发人员通常需要操作数据集，而减法是用来过滤或分析数据的常见操作。例如，如果一个程序需要确定有多少用户取消了服务，它将从原始用户数量中减去当前用户数量。总之，减法（subtraction）这一运算不仅仅是一个数学概念；它渗透到我们生活的各个方面。无论我们是在管理财务、分析数据还是仅仅试图理解我们周围的世界，减法都是一个基本工具，帮助我们理解数量和关系。掌握减法对于学业成功和实际问题解决至关重要，使其成为我们教育旅程中的关键要素。