分析:(1)先算乘除,再算加法;
(2)運(yùn)用加法交換律與結(jié)合律簡(jiǎn)算;
(3)先算括號(hào)內(nèi)的乘法,再算括號(hào)內(nèi)的減法,最后算括號(hào)外的除法;
(4)運(yùn)用乘法分配律簡(jiǎn)算;
(5)先算括號(hào)內(nèi)的乘法,再算括號(hào)內(nèi)的加法,最后算括號(hào)外的除法;
(6)先算小括號(hào)內(nèi)的,再算中括號(hào)內(nèi)的,最后算括號(hào)外的減法.
解答:解:(1)32×40+450÷18,
=1280+25,
=1305;
(2)
+
+
+
,
=(
+
)+(
+
),
=1+1,
=2;
(3)(6-1.3×4)÷0.1,
=(6-5.2)÷0.1,
=0.8÷0.1,
=8;
(4)13.7×1.4-3.7×1.4,
=(13.7-3.7)×1.4,
=10×1.4,
=14;
(5)(
+
×
)÷
,
=(
+
)×
,
=
×
,
=
;
(6)
-[(
+
)÷
],
=
-
÷
,
=
-
×
,
=
-
,
=
.
點(diǎn)評(píng):此題考查了四則混合運(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)算定律簡(jiǎn)便計(jì)算.