题目
7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,
提问时间：2020-10-19
答案
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
=7.5x(8.88+2.22)+2.5x11.1
=7.5x11.1+2.5x11.1
=11.1x(7.5+2.5)
=11.1x10
=111
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