Question

15£®¡°Ê®Ò»¡±»Æ½ðÖÜÆڼ䣬ij¶¯ÎïÔ°ÔÚ7Ìì¼ÙÆÚÖÐÿÌìÂÃÓεÄÈËÊý±ä»¯Èç±í£º£¨ÕýÊý±íʾ±ÈÇ°Ò»Ìì¶àµÄÈËÊý£¬¸ºÊý±íʾ±ÈÇ°Ò»ÌìÉÙµÄÈËÊý£©£®

ÈÕÆÚ£¨10Ô£©	1ÈÕ	2ÈÕ	3ÈÕ	4ÈÕ	5ÈÕ	6ÈÕ	7ÈÕ
ÈËÊý±ä»¯ µ¥Î»£ºÍòÈË	+1.6	+0.8	+0.4	-0.4	-0.8	+0.2	-1.2

£¨1£©Èô9ÔÂ30ÈÕµÄÓοÍÈËÊý¼ÇΪaÍòÈË£¬Ôò10ÔÂ1ÈÕµÄÓοÍÈËÊýΪ£º£¨a+1.6£©ÍòÈË£®£¨ÇëÓú¬aµÄ´úÊýʽ±íʾ£©
£¨2£©ÇëÎÊÆßÌìÄÚÓοÍÈËÊý×î¶àµÄÊÇÄÄÌ죿×îÉÙµÄÊÇÄÄÌ죿£¨Çë˵Ã÷ÀíÓÉ£©
£¨3£©Èô9ÔÂ30ÈÕµÄÓοÍÈËÊýΪ2ÍòÈË£¬ÃÅƱΪÿÈË10Ôª£¬Ôò»Æ½ðÖÜÆÚ¼ä¸Ã¶¯ÎïÔ°ÃÅƱÊÕÈëÊǶàÉÙÍòÔª£¿

Answer 1

·ÖÎö £¨1£©¸ù¾ÝÌâÒâ¿ÉÒÔÓú¬aµÄ´úÊýʽ±íʾ10ÔÂ1ÈÕµÄÈËÊý£»
£¨2£©¸ù¾ÝÌâÒ⣬¿ÉÒÔ·Ö±ðËã³ö10ÔÂ1ÈÕµ½7ÈÕµÄÈËÊý£¬´Ó¶ø¿ÉÒԵõ½ÄÄÌìÓοÍ×î¶à£¬ÄÄÌìÓοÍ×îÉÙ£»
£¨3£©¸ù¾ÝµÚ¶þÎÊÇóµÃµÄÿÌìµÄÈËÊý¿ÉÒÔÇó³öÕâÆßÌìµÄ×ܵÄÈËÊý£¬´Ó¶ø¿ÉÒÔÇó³öÕâÆßÌìµÄ×ÜÊÕÈ룮

½â´ð ½â£º£¨1£©ÓÉÌâÒâ¿ÉµÃ£¬
10ÔÂ1ÈÕµÄÓοÍÈËÊýΪ£º£¨a+1.6£©ÍòÈË£¬
¹Ê´ð°¸Îª£º£¨a+1.6£©£»
£¨2£©ÓÉÌâÒâ¿ÉµÃ£¬
10ÔÂ1ÈÕµÄÈËÊýΪ£ºa+1.6£»
10ÔÂ2ÈÕµÄÈËÊýΪ£ºa+1.6+0.8=a+2.4£»
10ÔÂ3ÈÕµÄÈËÊýΪ£ºa+2.4+0.4=a+2.8£»
10ÔÂ4ÈÕµÄÈËÊýΪ£ºa+2.8-0.4=a+2.4£»
10ÔÂ5ÈÕµÄÈËÊýΪ£ºa+2.4-0.8=a+1.6£»
10ÔÂ6ÈÕµÄÈËÊýΪ£º£ºa+1.6+0.2=a+1.8£»
10ÔÂ7ÈÕµÄÈËÊýΪ£ºa+1.8-1.2=a+0.6£»
ËùÒÔÆßÌìÄÚÓοÍÈËÊý×î¶àµÄ10ÔÂ3ÈÕ£¬×îÉÙµÄÊÇ10ÔÂ7ÈÕ£»
£¨3£©ÓÉÌâÒâ¿ÉµÃ£¬
£¨2+1.6£©+£¨2+2.4£©+£¨2+2.8£©+£¨2+2.4£©+£¨2+1.6£©+£¨2+1.8£©+£¨2+0.6£©=27.2£¨ÍòÈË£©
10¡Á27.2=272£¨ÍòÔª£©£®
´ð£º»Æ½ðÖÜÆÚ¼ä¸Ã¶¯ÎïÔ°ÃÅƱÊÕÈëÊÇ272ÍòÔª£®

µãÆÀ ±¾Ì⿼²éÕýÊýºÍ¸ºÊý£¬½âÌâµÄ¹Ø¼üÊÇÃ÷È·ÌâÒ⣬ÕÒ³öËùÇóÎÊÌâÐèÒªµÄÌõ¼þ£¬Ã÷È·ÕýÊýºÍ¸ºÊýÔÚÌâÄ¿ÖеÄʵ¼ÊÒâÒ壮