對(duì)照課文聽錄音

The Meaning of Division

除法的意義

We use division when we want to separate objects into groups of equal size.

當(dāng)我們想把物體分成相等的大小時(shí)，我們可以用除法。

The answer to a division problem is the quotient.

對(duì)于除法問題的答案叫做商數(shù)。

(1) The lunchroom can seat 72 people at the same time. There are 12 tables. Each table seats?the same number of people. How many people can sit at each table?

(1) 快餐店一次能容納72個(gè)人。店里有12張桌子，每張桌子所坐人數(shù)相同，請(qǐng)問一張桌子能坐多少個(gè)人？

Number sentence:? ___________? .

算術(shù)運(yùn)算式：___________? 。

Answer:? ___________? people.

答案：___________? 人。

(2) Each baseball team in the league has 9 players. There are 108 players in all. How many teams are there?

(2) 每支棒球隊(duì)有9個(gè)隊(duì)員。俱樂部里總共有108個(gè)隊(duì)員，請(qǐng)問這個(gè)俱樂部有多少支棒球隊(duì)？

Number sentence:? ___________? .

算術(shù)運(yùn)算式：___________? 。

Answer:? ___________? teams

答案：___________? 隊(duì)。

(3) The pet store has 32 hamsters. They keep the same number of hamsters in each cage.?There are 8 cages. How many hamsters are in each cage?

(3)寵物店里共有32只倉鼠。每個(gè)籠子里放有相同數(shù)目的倉鼠，共有8個(gè)籠子。請(qǐng)問每個(gè)籠子里有幾只倉鼠？

Number sentence:? ___________? .

算術(shù)運(yùn)算式：___________ 。

Answer:? ___________? hamsters.

答案：___________? 只倉鼠。

答? 案

(1) 72÷12=6,??????????? 6 people

(2) 108÷9=12,???????? 12 teams

(3) 32 ÷ 8=4???????????? 4 hamsters.

[注]

基本的數(shù)學(xué)乘除法的讀法：

3×5 = 15? Three multiplied by five makes fifteen.或Three times five equals fifteen .

15÷3＝5? Fifteen divided by three equals five.注意fifteen 后千萬不可加上is，念成is divided by。

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