概要:1000+999-998-997+996+995-994-993……+108+107-106-105+104+103-102-101 点击下一页查看答案>>>www.kgf8.com解答:1000+999-998-997+996+995-994-993+……+108+107-106-105+104+103-102-101=1000+(999-998-997+996)+(995-994-993+992)……+108+(107-106-105+104)+(103-102)-101==1000+0+0……+0+1-101=900
四年级奥数题及答案:计算,标签:小学奥数题,奥数题及答案,http://www.kgf8.com1000+999-998-997+996+995-994-993……+108+107-106-105+104+103-102-101
点击下一页查看答案>>>
www.kgf8.com
解答:
1000+999-998-997+996+995-994-993+……+108+107-106-105+104+103-102-101
=1000+(999-998-997+996)+(995-994-993+992)……+108+(107-106-105+104)+(103-102)-101
==1000+0+0……+0+1-101
=900