7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,_数学解答

7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,

人气：134 ℃　时间：2020-05-11 12:46:55

解答

7.5×8.88+2.22×7.5+2.5×11.1=
=7.5x(8.88+2.22)+2.5x11.1
=7.5x11.1+2.5x11.1
=11.1x(7.5+2.5)
=11.1x10
=111