分析:(1)先算括號(hào)內(nèi)的,再算括號(hào)外的;
(2)先算小括號(hào)內(nèi)的,再算中括號(hào)內(nèi)的,最后算括號(hào)外的;
(3)(4)先算乘法,再算減法;
(5)運(yùn)用乘法交換律與結(jié)合律簡(jiǎn)算;
(6)運(yùn)用乘法分配律簡(jiǎn)算.
解答:解:(1)(0.69+0.35)×0.12,
=1.04×0.12,
=0.1248;
(2)[32-(1.95-1.95)]÷1.6,
=[32-0]÷1.6,
=32÷1.6,
=20;
(3)15.52-1.6×5-5.7,
=15.52-8-5.7,
=7.52-5.7,
=1.82;
(4)4.8×12-4.8×2,
=4.8×(12-2),
=4.8×10,
=48;
(5)0.6×2.5×0.5×4,
=(0.6×0.5)×(2.5×4),
=0.3×10,
=3;
(6)3.5×2.34+3.5×7.6,
=3.5×(2.34+7.6),
=3.5×9.94,
=3.5×(10-0.06),
=3.5×10-3.5×0.06,
=35-0.21,
=34.79.
點(diǎn)評(píng):此題考查了小數(shù)的四則混合運(yùn)算,注意運(yùn)算順序和運(yùn)算法則,靈活運(yùn)用所學(xué)的運(yùn)算律簡(jiǎn)便計(jì)算.