ÌâÄ¿ÄÚÈÝ
¢Ù×î¹óµÄÊÇ
¢ÚÂò1ǧ¿Ë²ÝÝ®ºÍ1ǧ¿Ë·¬ÇÑ£¬¹²ÐèÒª¶àÉÙÇ®£¿
¢ÛÂò1ǧ¿ËÆ»¹ûºÍ1ǧ¿Ë²ÝÝ®£¬30ԪǮ¹»Âð£¿
¢ÜÌÔÆøÂòÁË2ǧ¿ËÏ㽶£¬»¹Ê£ÏÂ17.50Ôª£¬ÄãÖªµÀËû´øÁ˶àÉÙÇ®Âð£¿
¢ÝЦЦ½ñÌ칺Îï¹²ÓÃÈ¥30.8Ôª£¬ÆäÖÐÂò²ÝÝ®ÓÃÈ¥9.80Ôª£¬ÂòÆÏÌѱÈÂò²ÝÝ®¶àÓÃ4.5Ôª£¬ÓàϵÄǮȫ²¿ÂòÁËÆ»¹û£®ÂòÆÏÌÑÓÃÈ¥¶àÉÙÔª£¿ÂòÆ»¹ûÓÃÈ¥¶àÉÙÔª£¿
8Ôª/ǧ¿Ë 7.6Ôª/ǧ¿Ë 2.4Ôª/ǧ¿Ë 8.2Ôª/ǧ¿Ë 4.7Ôª/ǧ¿Ë£®
ÆÏÌÑ
ÆÏÌÑ
£¬×î±ãÒ˵ÄÊÇÎ÷ºìÊÁ
Î÷ºìÊÁ
¢ÚÂò1ǧ¿Ë²ÝÝ®ºÍ1ǧ¿Ë·¬ÇÑ£¬¹²ÐèÒª¶àÉÙÇ®£¿
¢ÛÂò1ǧ¿ËÆ»¹ûºÍ1ǧ¿Ë²ÝÝ®£¬30ԪǮ¹»Âð£¿
¢ÜÌÔÆøÂòÁË2ǧ¿ËÏ㽶£¬»¹Ê£ÏÂ17.50Ôª£¬ÄãÖªµÀËû´øÁ˶àÉÙÇ®Âð£¿
¢ÝЦЦ½ñÌ칺Îï¹²ÓÃÈ¥30.8Ôª£¬ÆäÖÐÂò²ÝÝ®ÓÃÈ¥9.80Ôª£¬ÂòÆÏÌѱÈÂò²ÝÝ®¶àÓÃ4.5Ôª£¬ÓàϵÄǮȫ²¿ÂòÁËÆ»¹û£®ÂòÆÏÌÑÓÃÈ¥¶àÉÙÔª£¿ÂòÆ»¹ûÓÃÈ¥¶àÉÙÔª£¿
8Ôª/ǧ¿Ë 7.6Ôª/ǧ¿Ë 2.4Ôª/ǧ¿Ë 8.2Ôª/ǧ¿Ë 4.7Ôª/ǧ¿Ë£®
·ÖÎö£º£¨1£©ÓÉÓÚ8.2Ôª£¾8Ôª£¾7.6Ôª£¾4.7Ôª£¾2.4Ôª£¬ËùÒÔ×î¹óµÄÊÇÆÏÌÑ£¬×î±ãÒ˵ÄÊÇ·¬ÇÑ£»
£¨2£©¸ù¾Ý¼Ó·¨µÄÒâÒ壬Âò1ǧ¿Ë²ÝÝ®ºÍ1ǧ¿Ë·¬ÇÑ£¬¹²Òª£º8+2.4=10.4£¨Ôª£©£»
£¨3£©¸ù¾Ý¼Ó·¨µÄÒâÒ壬Âò1ǧ¿ËÆ»¹ûºÍ1ǧ¿Ë²ÝÝ®ÐèÒª8+7.6Ôª£¬È»ºóºÍ30Ôª±È½Ï¼´¿É£»
£¨4£©¸ù¾Ý³Ë·¨µÄÒâÒ壬2ǧ¿ËÏ㽶ÐèÒª4.7¡Á2Ôª£¬ÓÖ»¹Ê£ÏÂ17.50Ôª£¬Ôò¹²´øÁË4.7¡Á2+17.5Ôª£»
£¨5£©Âò²ÝÝ®ÓÃÈ¥9.80Ôª£¬ÂòÆÏÌѱÈÂò²ÝÝ®¶àÓÃ4.5Ôª£¬ÔòÂò²ÝÝ®ÓÃÁË9.8+4.5Ôª£¬ËùÒÔÓÃ×ÜÇ®Êý¼õÈ¥Âò²ÝÝ®ÓëÆÏÌÑËùÓÃÇ®Êý£¬¼´µÃÂòÆ»¹ûÓÃÈ¥¶àÉÙÔª£®
£¨2£©¸ù¾Ý¼Ó·¨µÄÒâÒ壬Âò1ǧ¿Ë²ÝÝ®ºÍ1ǧ¿Ë·¬ÇÑ£¬¹²Òª£º8+2.4=10.4£¨Ôª£©£»
£¨3£©¸ù¾Ý¼Ó·¨µÄÒâÒ壬Âò1ǧ¿ËÆ»¹ûºÍ1ǧ¿Ë²ÝÝ®ÐèÒª8+7.6Ôª£¬È»ºóºÍ30Ôª±È½Ï¼´¿É£»
£¨4£©¸ù¾Ý³Ë·¨µÄÒâÒ壬2ǧ¿ËÏ㽶ÐèÒª4.7¡Á2Ôª£¬ÓÖ»¹Ê£ÏÂ17.50Ôª£¬Ôò¹²´øÁË4.7¡Á2+17.5Ôª£»
£¨5£©Âò²ÝÝ®ÓÃÈ¥9.80Ôª£¬ÂòÆÏÌѱÈÂò²ÝÝ®¶àÓÃ4.5Ôª£¬ÔòÂò²ÝÝ®ÓÃÁË9.8+4.5Ôª£¬ËùÒÔÓÃ×ÜÇ®Êý¼õÈ¥Âò²ÝÝ®ÓëÆÏÌÑËùÓÃÇ®Êý£¬¼´µÃÂòÆ»¹ûÓÃÈ¥¶àÉÙÔª£®
½â´ð£º½â£º£¨1£©8.2Ôª£¾8Ôª£¾7.6Ôª£¾4.7Ôª£¾2.4Ôª£¬
ËùÒÔ×î¹óµÄÊÇÆÏÌÑ£¬×î±ãÒ˵ÄÊÇ·¬ÇÑ£®
£¨2£©8+2.4=10.4£¨Ôª£©
´ð£ºÂò1ǧ¿Ë²ÝÝ®ºÍ1ǧ¿Ë·¬ÇÑ£¬¹²ÐèÒª10.4ԪǮ£®
£¨3£©8+7.6=15.6£¨Ôª£©£¬
15.6£¼30£¬
´ð£º30ԪǮ¹»Óã®
£¨4£©4.7¡Á2+17.5
=8.4+17.5
=25.9£¨Ôª£©£»
´ð£ºÄãÖªµÀËû´øÁË25.9Ç®£®
£¨5£©9.8+4.5=14.3£¨Ôª£©£¬
30.8-9.8-14.3
=21-14.3
=6.7£¨Ôª£©£»
´ð£ºÂòÆÏÌÑÓÃÈ¥14.3Ôª£¬ÂòÆ»¹ûÓÃÈ¥6.7Ôª£®
ËùÒÔ×î¹óµÄÊÇÆÏÌÑ£¬×î±ãÒ˵ÄÊÇ·¬ÇÑ£®
£¨2£©8+2.4=10.4£¨Ôª£©
´ð£ºÂò1ǧ¿Ë²ÝÝ®ºÍ1ǧ¿Ë·¬ÇÑ£¬¹²ÐèÒª10.4ԪǮ£®
£¨3£©8+7.6=15.6£¨Ôª£©£¬
15.6£¼30£¬
´ð£º30ԪǮ¹»Óã®
£¨4£©4.7¡Á2+17.5
=8.4+17.5
=25.9£¨Ôª£©£»
´ð£ºÄãÖªµÀËû´øÁË25.9Ç®£®
£¨5£©9.8+4.5=14.3£¨Ôª£©£¬
30.8-9.8-14.3
=21-14.3
=6.7£¨Ôª£©£»
´ð£ºÂòÆÏÌÑÓÃÈ¥14.3Ôª£¬ÂòÆ»¹ûÓÃÈ¥6.7Ôª£®
µãÆÀ£ºÍê³É´ËÀàÌâĿҪעÒâ´ÓͼÎÄÖлñµÃÕýÈ·ÐÅÏ¢£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿