7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,
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7.5×8.88+2.22×7.5+2.5×11.1=【简便运算,7.5×8.88+2.22×7.5+2.5×11.1=【简便运算,7.5×8.88+2.22×7.5+2.5×11.1=【简便运算,7
7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,
7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,
7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,
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
7.5×8.88+2.22×7.5+2.5×11.1
=7.5×8.88+2.22×7.5+7.5×3.7
=7.5×（8.88+2.22+3.7）
=7.5×14.8
=7.5×4×3.7
=30×3.7
=111
因式分解，7.5*11.1+2.5*11.1=11.1*10=111
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
7.5×8.88+2.22×7.5+2.5×11.1= 【简便运算,
8.15-3.78-2.22,4.5+5.87-6.23,64+7.5+2.5,17.75+0.8-9.87,4.76+5.87-2.
7.5-x=2.
7½×8.88+2.22×7.5+2½×11.1简便运算一又二千零九分之一*3.6+三又五分之三*八又二千零九分之二千零八2009½×2009½-2008½×2008½2/1×3＋2/3×5＋2/5×7···＋2/21×232009/2010×2001=2009/2010＋
1.156×157.157-157×156.1562.（8.88+8.88+8.88+8.88）×1.253.（6.4×7.5×8.1）÷（3.2×2.5×2.7）4.20.86÷12.5+0.8÷12.5-9.16÷12.5
7.5-2.45+7.5+2.45
X分之7.5=12分之2.
75*4.67+52.3*7.5+7.5
7.5×6.1÷7.5×6.
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