4+14+24.+134=?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/10/05 13:39:01
4+14+24.+134=?4+14+24.+134=?4+14+24.+134=?(4+134)+(14+124)+(24+114)+(34+104)+.+(64+74)=138+138+138+.

4+14+24.+134=?
4+14+24.+134=?

4+14+24.+134=?
(4+134)+(14+124)+(24+114)+(34+104)+.+(64+74)
=138+138+138+.+138
=138×7=966

((4+134)*14*10)/2=9660

4*14+10+20+30+40+50+60+70+80+90+100+120+130