解:(1)25×1.25×32,
=25×1.25×(4×8),
=(25×4)×(1.25×8),
=100×10,
=1000;
(2)(

+

)×10×6
=

×10×6+

×10×6
=6+10,
=16;
(3)(

-

)÷(4÷

)
=

÷

,
=

;
(4)[12-(11.9-8.4×

)]÷1.3,
=[12-(11.9-6.3)]÷1.3,
=[12-5.6]÷1.3,
=6.4÷1.3,
=

;
(5)

×[

÷(

-0.25)],
=

×[

÷

],
=

×4,
=

.
分析:(1)把32拆成4×8,然后再根據(jù)乘法交換律和結(jié)合律進(jìn)行簡(jiǎn)算;
(2)根據(jù)乘法分配律進(jìn)行簡(jiǎn)算;
(3)先算小括號(hào)里面的減法和除法,再算括號(hào)外面的除法;
(4)先算小括號(hào)里面的乘法,再算小括號(hào)里面的減法,再算中括號(hào)里面的減法,最后算除法;
(5)先算小括號(hào)里面的減法,再算中括號(hào)里面的除法,最后算乘法.
點(diǎn)評(píng):四則運(yùn)算,先弄清運(yùn)算順序,然后再進(jìn)一步計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算.