简便计算
问题描述：
简便计算
2.14+0.39÷1.3 100-123.1×0.3 2.1×5.5
怎样简便就怎样计算
答
2.14+0.39÷1.3
=2.14+0.3
=2.44
100-123.1×0.3
=100-12.31*3
=100-36.93
=63.07
2.1×5.5
=2.1*5*1.1
=10.5*1.1
=11.55