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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
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小六數學題請求協助
Nov 3rd 2013, 14:21

(1)
媽媽的身高是妹妹的1.2倍
媽媽的身高和兩人身高總和的最簡單整數比
=1.2:(1.2+1)=12:22
=6:11

(2)
(990/45)*2=44
[(2490-990)/20]*1=75
44+75=119點

(3)
272*(13/16)
=221公尺

(4)
汽水糖的重量是1200公克，
那麼水果糖重量=1200*(5/2) =3000公克
巧克力重量=3000*(1/1.6)=1875公克

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