【www.shkuanshun.cn--小学奥数】
★这篇《五年级奥数题及答案:简便运算》,是本站特地为大家整理的,希望对大家有所帮助!
657-(269+357)+169
答案与解析:
657-(269+357)+169
=657-(357+269)+169
=657-357-269+169
=300-(100+169)+169
=300-100-169+169
=200-169+169
=200
【www.shkuanshun.cn--小学奥数】
★这篇《五年级奥数题及答案:简便运算》,是本站特地为大家整理的,希望对大家有所帮助!
657-(269+357)+169
答案与解析:
657-(269+357)+169
=657-(357+269)+169
=657-357-269+169
=300-(100+169)+169
=300-100-169+169
=200-169+169
=200