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#1
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àÃ×èͧàÈÉÊèǹ¤Ñº
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#2
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$$-3\dfrac{4}{15}+\dfrac{7}{12}=-\dfrac{49}{15}+\dfrac{7}{12}=\dfrac{35}{60}-\dfrac{196}{60}=-\dfrac{161}{60}=-2\dfrac{41}{60}$$
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#3
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áÅéǶéҨӹǹàµçÁ¤ÙáѺàÈÉÊèǹÍèФÃѺ 5*5/10
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#4
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$5\times\frac{5}{10}=\frac{25}{10}=2\frac{5}{10}=2\frac{1}{2}$
Ê͹ä»áÅéǹФÃѺ ¤ÃÒǹÕéÁÒ½Ö¡¡Ñ¹ (·´ÊͺæµÒÁà¤Â) $4\times\frac{5}{11}$ $63\times\frac{2}{9}$ $8\times\frac{3}{32}$
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31 ¾ÄÉÀÒ¤Á 2009 21:54 : ¢éͤÇÒÁ¹Õé¶Ù¡á¡éä¢áÅéÇ 1 ¤ÃÑé§, ¤ÃÑé§ÅèÒÊØ´â´Â¤Ø³ ¤usÑ¡¤³Ôm |
#5
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ʧÊѤ§ÂØè§æ¹Ð¤ÃѺ
à©ÅÂàÅÂÅèСѹ $1.20/11=1.81818182$ $2.14$ $3/4=0.75$ ¶éÒ¼Ô´Âѧ䧡çªèǺ͡´éÇÂÅèСѹ¹Ð¤ÃѺ
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#6
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µÍººººººººººººº
3 àÈÉ 19 Êèǹ 60 |
#7
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Åͧ´ÙÍÕ¡·Õ¤ÃѺ (¼Ô´¤ÃѺ)
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