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Yahoo!奇摩知識+ - 分類問答 - 生活資訊 - 已解決
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請您幫我解答這三題數學？
Nov 2nd 2013, 13:50

(2) 11：15=□：285
15×□=11×285 □ =209
 答：209毫升

(3) 【3.6，2.5】=9
陳家3.6公升要3湯匙，則9公升要7.5湯匙
李家2.5公升要2湯匙，則9公升要7.2湯匙
答：陳家

(4) 40：220=□：880
 220×□=40×880
 □ =160
答：160c.c

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