## 字幕列表 影片播放

• Did you know that you use addition all the time?

你知道自己一直在使用加法嗎？

當您將錢存入銀行帳戶時，就會加進你的餘額

在雜貨店購物，你會將要買的物品加進購物車

• When you add, you're combining two or more numbers to get a larger number.

使用加法，你會組合兩個或兩個以上的數字，得到更大的數字。

• This larger number called the sum.

這個更大的數字稱為「總和」

• For example, if you already have three lemons and you go to the store

例如，假設你已經有三顆檸檬，你去店裡

• and buy two more, you now have five lemons.

再多買兩個，現在你就有五顆檸檬

• You can write this as: three plus two equals five.

你可以把它寫成：3加2等於5

• The plus sign is used when you add.

當你相加時，會使用到加號

• When you're adding, be sure to keep place values in mind.

把兩數相加時，請務必記得對齊原有的位數

• Place values determine the way you read and write a number.

對齊位數會決定你讀取和寫入數字的方式

• let's look at the number is six hundred and thirty two.

讓我們來看一下632這個數字

• Two is in the ones place.

2在個位數

• The three is in the tens place.

3在十位數

• And the sixth is in the hundreds place.

6則在百位數

• An easy way to add numbers is to stack them according to their place values.

一個簡單的算法是，根據它們的位數分別相加

• if you want to add twelve and three, first stack twelve, the larger of the two

如果要將12和3相加，首先列出12，它是兩數中較大的

• numbers, on top of three.

一個數，擺在3上頭

• Notice that the ones position for each of the two numbers are lined up vertically.

注意喔，兩個數字中的位數都是垂直排列

• Place a plus sign on the left of the stack and draw a line at the bottom.

並在兩個排列位數的左側寫上加號，並在底下畫一條線

現在，你就可以將它們相加了

• Three plus two is five. So put a five below the line.

3加2等於5，因此在橫線下寫個5

• The one in the tens place has nothing to combine with, so bring the one below the line.

10位數沒有什麼可以加的，所以把1寫在橫線底下。

• The answer, or sum, is fifteen.

答案，或稱總數，是15

• And those are the basics of addition

以上是基礎加法

Did you know that you use addition all the time?

A2 初級 中文 位數 加法 數字 檸檬 排列 等於