帮忙做俩道题了啦!!!!!!!!!!!!!!!!!!!
来源:百度知道 编辑:UC知道 时间:2024/09/21 12:41:52
简算:6+16+26+...116 6000-1-2-3-...-100
(1)6+16+26+...116
=(6+116)×[(116-6)÷10+1]÷2
=122×12÷2
=122×6
=732
(2) 6000-1-2-3-...-100
=6000-(1+2+3...+100)
=6000-(1+100)×100÷2
=6000-101×50
=6000-5050
=950
6+16+26+...116
=(6+116)×6
=122×6
=732
6000-1-2-3-...-100
=6000-(1+100)×50
=6000-101×50
=6000-5050
=950
应该是对的吧
解:1、
原式=(6+6+……+6)+(10+20+……+110)
=6*12+(10+110)*11/2
=732
2、
原式=6000-(1+100)*100/2
=950