解:①3.6÷(3.6+1.2),
=3.6÷4.8,
=0.75;
②26.18÷(5.2-3.5)+0.06,
=26.18÷1.7+0.06,
=15.4+0.06,
=15.46.
③(31.6-11.7)÷2.5÷0.4,
=19.9÷(2.5×0.4),
=19.9;
④[11÷(1-0.8)]÷0.1,
=[11÷0.2]÷0.1,
=55÷0.1
=550.
⑤20.12×48-201.2×1.4+2012×0.66,
=20.12×48-20.12×14+20.12×66,
=20.12×(48+14+66),
=20.12×128,
=2575.36.
分析:①3.6÷(3.6+1.2)根据四则运算的顺序,先算3.6+1.2,再算3.6除以3.6+1.2的和;
②26.18÷(5.2-3.5)+0.06根据四则运算的顺序,先算5.2-3.5,再算26.18除以5.2-3.5的差,最后算商加和;
③(31.6-11.7)÷2.5÷0.4根据四则运算的顺序,先算31.6-11.7再算除以括号里的(2.5×0.4);
④[11÷(1-0.8)]÷0.1根据四则运算的顺序,先算1-0.8再算中括号里的11除以1-0.8的差,最后算商除以0.1;
⑤20.12×48-201.2×1.4+2012×0.66把201.2×1.4变成20.12×14,2012×0.66变成20.12×66,在利用乘法的分配律计算简便.
点评:完成本题要注意分析式中数据,运用合适的简便方法计算.