解:(1)306÷(201×47-9413),
=306÷(9447-9413),
=306÷34,
=9;
(2)
÷[(
+
)×
],
=
÷[
×
],
=
÷
,
=
×15,
=3;
(3)
×35+35×
,
=(
+
)×35,
=1×35,
=35;
(4)2007×2009×(
+
),
=2007×2009×
+2007×2009×
,
=
+
,
=1+
+(1-
),
=2;
(5)53.7×5.3+537×0.37+53.7,
=53.7×5.3+53.7×3.7+53.7,
=(5.3+3.7+1)×53.7,
=10×53.7,
=537;
(6)
+
+
+…+
,
=2×(
+
+
+…+
),
=2×(1-
+
-
+
-
+…+
-
)
=2×(1-
)
=2×
=
.
分析:(1)先算括號(hào)內(nèi)的乘法,再算擴(kuò)阿紅誒的劍法,最后算括號(hào)外的除法;
(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)運(yùn)用乘法分配律的逆運(yùn)算簡(jiǎn)算;
(4)運(yùn)用乘法分配律簡(jiǎn)算;
(5)根據(jù)數(shù)字特點(diǎn),把原式變?yōu)?3.7×5.3+53.7×3.7+53.7,運(yùn)用乘法分配律的逆運(yùn)算簡(jiǎn)算;
(6)通過觀察,每個(gè)分?jǐn)?shù)的分子都是2,于是先把2拿出來,括號(hào)內(nèi)的分?jǐn)?shù)可以拆成兩個(gè)分?jǐn)?shù)相減的形式,然后通過加減相抵消的方法,得出結(jié)果.
點(diǎn)評(píng):此題考查了四則混合運(yùn)算的運(yùn)算順序,以及運(yùn)用運(yùn)算定律或運(yùn)算技巧簡(jiǎn)算的能力.