78.1*54.3+78.1*45.45+78.1/4怎么简便计算
问题描述:
78.1*54.3+78.1*45.45+78.1/4怎么简便计算
答
78.1*54.3+78.1*45.45+78.1/4
=78.1*54.3+78.1*45.45+78.1*0.25
=78.1*(54.3+45.45+0.25)
=78.1*100
=7810