ÌâÄ¿ÄÚÈÝ

11£®¼ÆËãÏÂÃæ¸÷Ì⣬ÄܼòËãµÄ¿ÉÒÔ¼òË㣮
$\frac{4}{7}$¡Á$\frac{2}{3}$¡Á$\frac{7}{8}$                   £¨$\frac{1}{3}$¡Á$\frac{1}{8}$£©¡Á24                  12¡Â$\frac{4}{5}$¡Â$\frac{3}{8}$
$\frac{5}{6}$¡Á£¨$\frac{2}{5}$¡Á$\frac{1}{7}$£©                 $\frac{3}{8}$¡Â$\frac{1}{15}$¡Á$\frac{4}{5}$                  27¡Á$\frac{4}{5}$+27¡Â5

·ÖÎö £¨1£©ÔËÓó˷¨µÄ½»»»ÂɽøÐмòË㣻
£¨2£©ÔËÓó˷¨µÄ½áºÏÂɽøÐмòË㣻
£¨3£©°Ñ³ý·¨»¯³É³Ë·¨½øÐÐÔ¼·Ö¼ÆË㣻
£¨4£©ÔËÓó˷¨µÄ½áºÏÂɽøÐмòË㣻
£¨5£©°Ñ³ý·¨»¯³É³Ë·¨£¬ÔÙÔËÓó˷¨µÄ½áºÏÂɽøÐмòË㣻
£¨6£©°Ñ³ýÒÔ5»¯³É³ËÒÔ$\frac{1}{5}$£¬ÔÙÔËÓó˷¨µÄ·ÖÅäÂɽøÐмòË㣮

½â´ð ½â£º£¨1£©$\frac{4}{7}$¡Á$\frac{2}{3}$¡Á$\frac{7}{8}$ 
=$\frac{4}{7}$¡Á$\frac{7}{8}$¡Á$\frac{2}{3}$
=$\frac{1}{2}$¡Á$\frac{2}{3}$
=$\frac{1}{3}$£»

£¨2£©£¨$\frac{1}{3}$¡Á$\frac{1}{8}$£©¡Á24
=$\frac{1}{3}$¡Á£¨$\frac{1}{8}$¡Á24£©
=$\frac{1}{3}$¡Á3
=1£»

£¨3£©12¡Â$\frac{4}{5}$¡Â$\frac{3}{8}$
=12¡Á$\frac{5}{4}$¡Á$\frac{8}{3}$
=$\frac{12¡Á5¡Á8}{4¡Á3}$
=40£»

£¨4£©$\frac{5}{6}$¡Á£¨$\frac{2}{5}$¡Á$\frac{1}{7}$£©
=£¨$\frac{5}{6}$¡Á$\frac{2}{5}$£©¡Á$\frac{1}{7}$
=$\frac{1}{3}$¡Á$\frac{1}{7}$
=$\frac{1}{21}$£»

£¨5£©$\frac{3}{8}$¡Â$\frac{1}{15}$¡Á$\frac{4}{5}$   
=$\frac{3}{8}$¡Á15¡Á$\frac{4}{5}$   
=$\frac{3}{8}$¡Á£¨15¡Á$\frac{4}{5}$£©  
=$\frac{3}{8}$¡Á12
=$\frac{9}{2}$£»

£¨6£©27¡Á$\frac{4}{5}$+27¡Â5
=27¡Á$\frac{4}{5}$+27¡Á$\frac{1}{5}$
=27¡Á£¨$\frac{4}{5}$+$\frac{1}{5}$£©
=27¡Á1
=27£®

µãÆÀ ¿¼²éÁË·ÖÊýÔËË㶨ÂÉÓë¼ò±ãÔËË㣬ËÄÔò»ìºÏÔËË㣮עÒâÔËËã˳ÐòºÍÔËËã·¨Ôò£¬Áé»îÔËÓÃËùѧµÄÔËËãÂɼò±ã¼ÆË㣮

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø