如题所述
第1个回答 2019-12-04
先乘除后加减
有括号的先算括号内再算括号外
=230*15030
=3456900
有括号的先算括号内再算括号外
=230*15030
=3456900
第2个回答 2019-12-04
230×[(135+270)÷9]
=230×[135÷9+270÷9]
=230×[15+30]
=230×45
=230×40+230×5
=9200+1150
=10350本回答被网友采纳
=230×[135÷9+270÷9]
=230×[15+30]
=230×45
=230×40+230×5
=9200+1150
=10350本回答被网友采纳
第3个回答 2019-12-21
230×[(135+270)÷9]
=230×(405÷9)
=230×45
=230×(50-5)
=230×50-230×5
=11500-1150
=10350
=230×(405÷9)
=230×45
=230×(50-5)
=230×50-230×5
=11500-1150
=10350
第4个回答 2019-12-04
230×[(135+270)÷9]
=230×[135÷9+270÷9]
=230×[15+30]
=(200+30)×45
=9000+1350
=10350
=230×[135÷9+270÷9]
=230×[15+30]
=(200+30)×45
=9000+1350
=10350