8.88*3.33+6.67*3.33+6.67*5.55的简便方法

问题描述:

8.88*3.33+6.67*3.33+6.67*5.55的简便方法

=8.88*3.33+6.67*(3.33+5.55)
=8.88*3.33+6.67*8.88
=8.88*(3.33+6.67)
=8.88*1
=8.88我再问一个8.64-2.4+2.36-1.6简便方法