解:(1)4296-1296÷12+812,
=4296-108+812,
=4188+812,
=5000;
(2)51÷0.17+2.6×6,
=300+15.6,
=315.6;
(3)
×
÷
+
,
=
÷
+
,
=
+
,
=
;
(4)
×
+
÷
,
=(
+
)×
,
=1×
,
=
;
(5)125×0.32×25,
=125×0.8×0.4×25,
=(125×0.8)×(0.4×25),
=100×10,
=1000;
(6)
÷(
+
)×
,
=
÷
×
,
=
×
×
,
=
×
,
=
.
分析:(1)先算除法,再算減法,最后算加法;
(2)先同時(shí)運(yùn)算乘法和乘法,再算加法;
(3)先算乘法,再算除法,最后算加法;
(4)運(yùn)用運(yùn)用乘法分配律簡(jiǎn)算;
(5)先把0.32分解成0.8×0.4,再運(yùn)用乘法結(jié)合律簡(jiǎn)算;
(6)先算小括號(hào)里面的加法,再算括號(hào)外的除法,最后算乘法.
點(diǎn)評(píng):此題主要考查分?jǐn)?shù)、整數(shù)、小數(shù)的四則混合運(yùn)算的運(yùn)算順序和應(yīng)用運(yùn)算定律進(jìn)行簡(jiǎn)便計(jì)算.