ÌâÄ¿ÄÚÈÝ

1£®¼ÆËãÏÂÃæ¸÷Ì⣮
$\frac{4}{17}$¡Á5      $\frac{25}{39}$¡Á$\frac{13}{30}$         $\frac{7}{9}$¡Á$\frac{2}{3}$-$\frac{2}{7}$
$\frac{5}{16}$¡Á$\frac{8}{15}$    $\frac{6}{11}$¡Á$\frac{7}{15}$¡Á10     $\frac{19}{100}$¡Á$\frac{3}{8}$¡Á50£®

·ÖÎö £¨1£©£¨2£©£¨4£©¸ù¾Ý·ÖÊý³Ë·¨µÄ¼ÆËã·½·¨Çó½â£º·Ö×ÓÏà³ËµÄ»ý×ö·Ö×Ó£¬·ÖĸÏà³ËµÄ»ý×ö·Öĸ£¬ÄÜÔ¼·ÖµÄÏÈÔ¼·Ö£»
£¨3£©ÏÈËã³Ë·¨£¬ÔÙËã¼õ·¨£»
£¨5£©ÔËÓó˷¨½áºÏÂɼòË㣻
£¨6£©¸ù¾Ý³Ë·¨½»»»ÂɼòË㣮

½â´ð ½â£º£¨1£©$\frac{4}{17}$¡Á5 
=$\frac{4¡Á5}{17}$
=$\frac{20}{17}$£»

£¨2£©$\frac{25}{39}$¡Á$\frac{13}{30}$ 
=$\frac{25¡Á13}{39¡Á30}$
=$\frac{5}{18}$£»

£¨3£©$\frac{7}{9}$¡Á$\frac{2}{3}$-$\frac{2}{7}$
=$\frac{14}{27}$-$\frac{2}{7}$
=$\frac{44}{189}$£»

£¨4£©$\frac{5}{16}$¡Á$\frac{8}{15}$
=$\frac{5¡Á8}{16¡Á15}$
=$\frac{1}{6}$£»

£¨5£©$\frac{6}{11}$¡Á$\frac{7}{15}$¡Á10 
=$\frac{6}{11}$¡Á£¨$\frac{7}{15}$¡Á10£©
=$\frac{6}{11}$¡Á$\frac{14}{3}$
=$\frac{28}{11}$£»

£¨6£©$\frac{19}{100}$¡Á$\frac{3}{8}$¡Á50
=$\frac{19}{100}$¡Á50¡Á$\frac{3}{8}$
=$\frac{19}{2}$¡Á$\frac{3}{8}$
=$\frac{57}{16}$£®

µãÆÀ ±¾Ì⿼²éÁËËÄÔò»ìºÏÔËËãÒÔ¼°·ÖÊý³Ë·¨µÄ¼ÆËã·½·¨£¬×¢ÒâÔËËã˳ÐòºÍÔËËã·¨Ôò£¬Áé»îÔËÓÃËùѧµÄÔËË㶨ÂɽøÐмò±ã¼ÆË㣮

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø