[Script Info] Title: [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:00.81,0:00:03.11,Default,,0000,0000,0000,,歡迎來到分數除法的教學課程 Dialogue: 0,0:00:03.11,0:00:04.49,Default,,0000,0000,0000,,讓我們開始吧 Dialogue: 0,0:00:04.49,0:00:06.64,Default,,0000,0000,0000,,在我教你們之前,事實上,我想要 Dialogue: 0,0:00:06.64,0:00:09.34,Default,,0000,0000,0000,,用不同的模組來教--我將教你 Dialogue: 0,0:00:09.34,0:00:11.74,Default,,0000,0000,0000,,如何做分數除法的技巧 Dialogue: 0,0:00:11.74,0:00:13.74,Default,,0000,0000,0000,,而你會發現這其實 Dialogue: 0,0:00:13.74,0:00:16.03,Default,,0000,0000,0000,,不會比分數乘法更難 Dialogue: 0,0:00:16.03,0:00:21.41,Default,,0000,0000,0000,,如果我問你,1/2除以1/2,不論何時 Dialogue: 0,0:00:21.41,0:00:25.11,Default,,0000,0000,0000,,當數字除以分數,或除以任何數字的時候 Dialogue: 0,0:00:25.11,0:00:29.96,Default,,0000,0000,0000,,就等同於乘以這個數字的倒數 Dialogue: 0,0:00:29.96,0:00:36.67,Default,,0000,0000,0000,,所以,1/2除以1/2,就等於1/2乘以2/1 Dialogue: 0,0:00:36.67,0:00:44.99,Default,,0000,0000,0000,,我們剛剛把第二個1/2變為倒數 Dialogue: 0,0:00:44.99,0:00:47.63,Default,,0000,0000,0000,,我們從乘法模組知道,1/2乘以2/1 Dialogue: 0,0:00:47.63,0:00:51.11,Default,,0000,0000,0000,,就等於2/2 Dialogue: 0,0:00:51.11,0:00:53.56,Default,,0000,0000,0000,,或者就等於1 Dialogue: 0,0:00:53.56,0:00:56.02,Default,,0000,0000,0000,,這很合理,事實上,任何數字除以自己 Dialogue: 0,0:00:56.02,0:00:58.75,Default,,0000,0000,0000,,就等於1 Dialogue: 0,0:00:58.75,0:01:03.22,Default,,0000,0000,0000,,1/2除以1/2等於1,就像是5除以5等於1 Dialogue: 0,0:01:03.22,0:01:05.24,Default,,0000,0000,0000,,100除以100等於1 Dialogue: 0,0:01:05.24,0:01:06.85,Default,,0000,0000,0000,,這不是一個新的定律 Dialogue: 0,0:01:06.85,0:01:08.97,Default,,0000,0000,0000,,事實上,你過去總是如此做 Dialogue: 0,0:01:16.29,0:01:20.56,Default,,0000,0000,0000,,但是,這也不就像是2乘以2的倒數 Dialogue: 0,0:01:20.56,0:01:24.21,Default,,0000,0000,0000,,結果也是1