英文里‘加减乘除’怎么说？

Learning How to Say "Addition, Subtraction, Multiplication, and Division" in English

When diving into the world of mathematics, it's crucial to understand the fundamental operations: addition, subtraction, multiplication, and division. These operations form the backbone of arithmetic and are essential for solving a wide range of mathematical problems. If you're eager to learn how to express these concepts in English, you're in the right place. Let's explore the English terminology for each of these operations, along with some practical examples and tips to help you master them.

Addition: Bringing Things Together

Addition is the process of combining two or more quantities to find their total. In English, the word "addition" refers to this operation. When you add two numbers, you're essentially bringing them together to form a sum.

Here's how you can express addition in English:

Phrase: "Plus" or "and" (when written)

Symbol: "+"

Sentence Example: "Five plus three equals eight." Or, "Five and three make eight."

In conversation, you might hear people say, "I added five and three, and the answer is eight." Alternatively, in written form, you'd see "5 + 3 = 8."

Understanding addition goes beyond memorizing the word "plus." It involves recognizing patterns, using your fingers to count, or even visualizing objects being grouped together. For instance, if you have five apples and someone gives you three more, you now have eight apples in total.

Subtraction: Taking Away

Subtraction is the opposite of addition. It involves removing a quantity from another to find the difference. In English, we use the word "subtraction" to describe this process.

Here's how you can express subtraction in English:

Phrase: "Minus"

Symbol: "-"

Sentence Example: "Seven minus four equals three."

Imagine you have seven candies and you give away four of them. To find out how many candies you have left, you would subtract four from seven. In conversation, you might say, "I subtracted four from seven, and I have three left." In written form, it would be "7 - 4 = 3."

Subtraction can sometimes be tricky for students because it requires an understanding of the inverse relationship between addition and subtraction. It's helpful to practice with physical objects, such as blocks or counters, to visualize what's being taken away.

Multiplication: Repeated Addition

Multiplication is a way of finding the total when a number is added to itself multiple times. In English, we use the word "multiplication" for this operation. It can also be thought of as a shortcut for repeated addition.

Here's how you can express multiplication in English:

Phrase: "Times" or "multiplied by"

Symbol: "×" (or "*")

Sentence Example: "Four times five equals twenty." Or, "Four multiplied by five is twenty."

Imagine you have four groups of five apples each. To find the total number of apples, you would multiply four by five. In conversation, you might say, "I multiplied four by five, and the answer is twenty." In written form, it would be "4 × 5 = 20" or "4 * 5 = 20."

Multiplication can be more abstract than addition and subtraction because it involves working with larger numbers and understanding the concept of groups. However, it becomes easier with practice, especially when using real-life examples and visual aids.

Division: Sharing Equally

Division is the process of splitting a number into equal parts. In English, we use the word "division" for this operation. It's the inverse of multiplication and involves finding out how many times one number fits into another.

Here's how you can express division in English:

Phrase: "Divided by"

Symbol: "÷" (or "/")

Sentence Example: "Twenty divided by four equals five."

Imagine you have twenty candies and you want to share them equally among four people. To find out how many candies each person gets, you would divide twenty by four. In conversation, you might say, "I divided twenty by four, and each person gets five candies." In written form, it would be "20 ÷ 4 = 5" or "20 / 4 = 5."

Division can be challenging because it requires an understanding of fractions and remainders. It's essential to practice with a variety of numbers, including whole numbers, decimals, and fractions, to build confidence and fluency.

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