ÌâÄ¿ÄÚÈÝ
4£®¹ÅÏ£À°Êýѧ¼Ò¶ª·¬Í¼ÊÇÖø³ÆÓÚÊÀµÄÊýѧ¼Ò£¬ÔÚËýµÄű®ÉÏ¿Ì×ÅÒ»¶ÎĹ־Ãú£º¡°ËûÉúÃüµÄ$\frac{1}{6}$ÊÇÐÒ¸£µÄͯÄꣻÔÙ»îÁËËûÉúÃüµÄ$\frac{1}{12}$£¬Á½¼Õ³¤ÆðÁËϸϸµÄºúÐ룻ÓжȹýÁËÒ»ÉúµÄ$\frac{1}{7}$£¬Ëû½á»éÁË£»ÔÙ¹ý5Ä꣬ËûÓÐÁ˶ù×Ó£¬¸Ðµ½ºÜÐÒ¸££»¿ÉÊǶù×ÓÖ»»îÁËËûÈ«²¿ÄêÁäµÄÒ»°ë£¬Ëý¶ù×ÓËÀºó£¬ËûÔÚ¼«¶ÈÍ´¿àÖжȹýÁË4Ä꣬ÓëÊÀ³¤´ÇÁË£®¡±ÇëÄã¼ÆË㶪·¬Í¼»îÁ˶àÉÙËꣿ·ÖÎö °ÑËûµÄÊÙÃü¿´³Éµ¥Î»¡°1¡±£¬Í¯Äê¾ÍÕ¼$\frac{1}{6}$£¬´ÓͯÄêµ½³¤ÆðÁËϸϸµÄºúÐ룬¹ýÁË$\frac{1}{12}$£¬´Ó³¤ÆðºúÐëµ½½á»éÊÇ$\frac{1}{7}$£¬ºÍº¢×ÓÔÚÒ»ÆðÉú»îÁË$\frac{1}{2}$£¬Ê£ÏµÄʱ¼ä¶ÔÓ¦µÄÊýÁ¿¾ÍÊÇ5ÄêºÍ4ÄêµÄºÍ£¬Óóý·¨¾Í¿ÉÒÔÇó³öËûµÄÊÙÃü¾Ý´ËÁÐʽ¼ÆËã¼´¿É½â´ð£®
½â´ð ½â£º£¨5+4£©¡Â£¨1-$\frac{1}{6}$-$\frac{1}{12}$-$\frac{1}{7}$-$\frac{1}{2}$£©
=9¡Â$\frac{3}{28}$
=84£¨Ë꣩
´ð£º¶ª·¬Í¼»îÁË84Ë꣮
µãÆÀ ±¾Ìâ¸øµÄÐÅÏ¢Á¿½Ï´ó£¬µ«ÕÒ³öµ¥Î»¡°1¡±£¬È»ºóÕÒ³ö4ÄêºÍ5Äê¶ÔÓ¦µÄ·ÖÊý¾Í¿É½â¾öÎÊÌ⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
14£®ÏÂÃæ¸ø³ö¼¸×éľ°ôµÄ³¤¶È£¬ÄÜÆ´³ÉÒ»¸öÈý½ÇÐεÄÊÇ£¨¡¡¡¡£©
A£® | 3 cm¡¢3 cm ºÍ6cm | B£® | 4 dm¡¢5 dmºÍ8m | C£® | 1m£¬2mºÍ3m | D£® | 5cm£¬8cmºÍ10cm |