33.28-7.69-2.31用简便方法计算
问题描述：
33.28-7.69-2.31用简便方法计算
答
=33.28-(7.69+2.31)
=33.28-10
=23.28
33.28-7.69-2.31用简便方法计算
=33.28-(7.69+2.31)
=33.28-10
=23.28