8400÷8一23X40的简便方法?

2024-11-24 23:04:05
推荐回答(2个)
回答1:

8400÷8-23×40
=(800+400)÷8-920
=8000÷8+400÷8-920
=1000+50-920
=1000-920+50
=130

回答2:

8400÷8-23*40
=1050-920
=130