1.1111*1.9999-0.1111*0.9999
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1.1111*1.9999-0.1111*0.99991.1111*1.9999-0.1111*0.99991.1111*1.9999-0.1111*0.99991.1111×1.9999-0.111
1.1111*1.9999-0.1111*0.9999
1.1111*1.9999-0.1111*0.9999
1.1111*1.9999-0.1111*0.9999
1.1111×1.9999-0.1111×0.9999
=1.1111×（1+0.9999）-0.1111×0.9999
=1.1111×1+1.1111×0.9999-0.1111×0.9999
=1.1111+（1.1111-0.1111）×0.9999
=1.1111+1×0.9999
=1.1111+0.9999
=2.111
愿对你有所帮助!
1.1111*1.9999-0.1111*0.9999
1.1111×1.9999-0.1111×0.9999怎么简便算啊
速求答案 要过程1.1111*1.9999-0.1111*0.9999=?
1+1.1+1.11+1.111+1.1111+1.1111+1.11111=?
0.7777×0.7+0.1111×2
0.1111换小数（）
0.7777×0.7+0.1111×2.1
1.99999+1.9999+1.999+1.99+1.9快来帮我!
1.9999……是纯循环小数吗?
0.9999×0.7＋0.1111×2.
0.9999*0.7+0.1111*0.7=?
0.9999*0.7+0.1111*2.7简算
0.9999×0.8+0.1111×1.8 巧算
0.7777×0.7-0.1111×2.1求简算急?
0.7777×0.7+0.1111×2.1=?
简算0.7777*10.4-0.1111*0.28
1.9999+19.999+199.99+1999.9+19999的简便算法是什么?
1.9+1.99+1.999+1.9999+1.99999+1.999999的简便运算