5.6+2.7+4.5用两数定律怎么算?

如题所述

第1个回答  2020-04-24
5.6+2.7+4.5
=5.5+0.1+2.7+4.5
=5.5+4.5+0.1+2.7
=10+0.1+2.7
=10.1+2.7
=12.8本回答被网友采纳
第2个回答  2020-04-24
5·6+2·7+4·5=12·8