字幕列表 影片播放 列印所有字幕 列印翻譯字幕 列印英文字幕 Did you know that you use addition all the time? 你知道自己一直在使用加法嗎? When you put money into your bank account, you're adding to your balance. 當您將錢存入銀行帳戶時,就會加進你的餘額 At the grocery store, you add items to your cart. 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 Now you're ready to add. 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
A2 初級 中文 位數 加法 數字 檸檬 排列 等於 數學基礎知識。加法 (Math Basics: Addition) 679 55 阿蘭 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字