[Script Info] Title: [Events] Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text Dialogue: 0,0:00:00.72,0:00:06.99,Default,,0000,0000,0000,,我們要算9.005-3.6,或者將它視為 Dialogue: 0,0:00:06.99,0:00:13.07,Default,,0000,0000,0000,,9又5/1000 減 3又6/10 Dialogue: 0,0:00:13.07,0:00:15.80,Default,,0000,0000,0000,,每當你做小數的減法時 Dialogue: 0,0:00:15.80,0:00:18.06,Default,,0000,0000,0000,,或當你算小數加法時,最重要的 Dialogue: 0,0:00:18.08,0:00:20.57,Default,,0000,0000,0000,,就是把小數排列整齊 Dialogue: 0,0:00:20.57,0:00:31.88,Default,,0000,0000,0000,,所以,這是9.005-3.6 Dialogue: 0,0:00:31.88,0:00:34.86,Default,,0000,0000,0000,,我們要將小數排列好,然後我們 Dialogue: 0,0:00:34.86,0:00:36.87,Default,,0000,0000,0000,,就可以開始計算 Dialogue: 0,0:00:36.87,0:00:38.67,Default,,0000,0000,0000,,現在,我們可以減 Dialogue: 0,0:00:38.67,0:00:40.13,Default,,0000,0000,0000,,所以我們從這開始 Dialogue: 0,0:00:40.13,0:00:41.53,Default,,0000,0000,0000,,5減掉沒有東西 Dialogue: 0,0:00:41.53,0:00:44.58,Default,,0000,0000,0000,,你可以想像3.6,或3又6/10,我們可以 Dialogue: 0,0:00:44.58,0:00:47.87,Default,,0000,0000,0000,,在這邊加上兩個零,這就等於3又600/1000 Dialogue: 0,0:00:47.87,0:00:52.60,Default,,0000,0000,0000,,就等於6/10 Dialogue: 0,0:00:52.60,0:00:54.34,Default,,0000,0000,0000,,當你把它變為這樣,你可以計算了。 Dialogue: 0,0:00:54.34,0:00:57.27,Default,,0000,0000,0000,,5減0,你只要把5寫在這邊 Dialogue: 0,0:00:57.27,0:00:59.00,Default,,0000,0000,0000,,或者你可以說,如果這邊沒數字 Dialogue: 0,0:00:59.00,0:01:00.74,Default,,0000,0000,0000,,就是5減掉沒有東西,就等於5 Dialogue: 0,0:01:00.74,0:01:04.47,Default,,0000,0000,0000,,然後0減0,等於0 Dialogue: 0,0:01:04.47,0:01:07.60,Default,,0000,0000,0000,,然後是0減6 Dialogue: 0,0:01:07.60,0:01:10.20,Default,,0000,0000,0000,,你無法用0減掉6 Dialogue: 0,0:01:10.20,0:01:12.82,Default,,0000,0000,0000,,所以我們得拿某個東西到這邊 Dialogue: 0,0:01:12.82,0:01:14.93,Default,,0000,0000,0000,,我們想做的,基本上就是重新分配 Dialogue: 0,0:01:14.93,0:01:21.08,Default,,0000,0000,0000,,我們要從9這邊拿走1 Dialogue: 0,0:01:21.08,0:01:25.12,Default,,0000,0000,0000,,從9這邊拿走1,就變為8 Dialogue: 0,0:01:25.12,0:01:26.67,Default,,0000,0000,0000,,然後我們轉換1 Dialogue: 0,0:01:26.67,0:01:28.93,Default,,0000,0000,0000,,我們要把它放到十分位 Dialogue: 0,0:01:28.93,0:01:32.67,Default,,0000,0000,0000,,記住,1就等於10/10 Dialogue: 0,0:01:32.67,0:01:34.33,Default,,0000,0000,0000,,這是十分位 Dialogue: 0,0:01:34.33,0:01:37.27,Default,,0000,0000,0000,,所以這裡就變成10 Dialogue: 0,0:01:37.27,0:01:39.24,Default,,0000,0000,0000,,有時,可以想成你借了1 Dialogue: 0,0:01:39.24,0:01:41.20,Default,,0000,0000,0000,,你從左邊借了1,換到右邊就 Dialogue: 0,0:01:41.20,0:01:43.80,Default,,0000,0000,0000,,變為10 Dialogue: 0,0:01:43.80,0:01:46.81,Default,,0000,0000,0000,,所以1就等於10/10,我們在十分位的地方 Dialogue: 0,0:01:46.81,0:01:49.74,Default,,0000,0000,0000,,所以用10減6 Dialogue: 0,0:01:49.74,0:01:50.80,Default,,0000,0000,0000,,讓我換個顏色 Dialogue: 0,0:01:50.80,0:01:52.80,Default,,0000,0000,0000,,10-6=4 Dialogue: 0,0:01:52.80,0:01:55.82,Default,,0000,0000,0000,,小數點在這邊,然後 Dialogue: 0,0:01:55.82,0:01:58.53,Default,,0000,0000,0000,,8-3=5 Dialogue: 0,0:01:58.53,9:59:59.99,Default,,0000,0000,0000,,所以,9.005-3.6=5.405