小數(shù)點(diǎn)的移動(dòng)

1、小數(shù)點(diǎn)移動(dòng),小數(shù)點(diǎn)往右移，金箍棒越變越大,0.009米=9毫米,0.09米,0.9米,9米,90毫米,900毫米,9000毫米,從上往下觀察,小數(shù)點(diǎn)向右,移動(dòng)一位，原數(shù)就擴(kuò)大到原數(shù)的10倍,移動(dòng)兩位，原數(shù)就擴(kuò)大到原數(shù)的100倍,移動(dòng)三位，原數(shù)就擴(kuò)大到原數(shù)的1000倍,0.009米=9毫米,0.09米,0.9米,9米,90毫米,900毫米,9000毫米,從下往上觀察,小數(shù)點(diǎn)向左,四句歌,右移擴(kuò)大、左移縮小,移動(dòng)一（二、三、-）位是10（100、1000-）倍,位數(shù)不夠“0”補(bǔ)位,小數(shù)點(diǎn)移動(dòng)要記牢,填 空,1、把2.3的小數(shù)點(diǎn)向右移動(dòng)一位, 原數(shù)就（ ）了（ ）倍,2、把0.375擴(kuò)大100倍，小

2、數(shù)點(diǎn) 向（ ）移動(dòng)（ ）位,3、把0.73的小數(shù)點(diǎn)向（ ）移動(dòng) （ ）位，原數(shù)縮小100倍,4、把30的小數(shù)點(diǎn)向（ ）移動(dòng)（ ）位，原數(shù)變成0.03,0.01平方米,把0.01平方米擴(kuò)大到它的10倍、100倍、1000倍，各是多少,0.1平方米,0.0110 = 0.1,0.110,1,數(shù)的擴(kuò)大,一個(gè)數(shù)擴(kuò)大10倍，小數(shù)點(diǎn)向右移動(dòng)一位,一個(gè)數(shù)擴(kuò)大100倍，小數(shù)點(diǎn)向右移動(dòng)兩位,一個(gè)數(shù)擴(kuò)大1000倍，小數(shù)點(diǎn)向右移動(dòng)三位,把0.01擴(kuò)大10倍就是把它乘以10,1 平方米,0.1平方米,110 = 0.1,0.110,0.01,數(shù)的縮小,一個(gè)數(shù)數(shù)縮小1000倍，小數(shù)點(diǎn)向左移動(dòng)三位,一個(gè)數(shù)縮小 100倍，小數(shù)點(diǎn)向左移動(dòng)兩位,一個(gè)數(shù)縮小10倍，小數(shù)點(diǎn)向左移動(dòng)一位,在下表的空格里填上正確的數(shù),10.75,0.36,35.4,4,107.5,3.6,354,40,1075,36,3540,400,下面的數(shù)去掉小數(shù)點(diǎn),各是原數(shù)的多少倍,10倍,100倍,100倍,1000倍,100倍,智,力,擂,臺,35.28擴(kuò)大十倍,選擇正確的答案,3.528,352.8,0.3528,3528,0.03528,35280,35.28縮小十倍,35.28縮小一千倍,35.28擴(kuò)大一百倍,126,126,