解:(1)(54+
)÷9,
=54×
+
×
,
=6+
×
,
=6
;
(2)105×13-1890÷18,
=105×13-105,
=105×(13-1),
=(100+5)×12,
=1200+60,
=1260;
(3)36÷[(
-
)×3],
=36÷[
×3-
×3],
=36÷[
-1],
=36÷
,
=36×
,
=24;
(4)9.25×9.9+92.5%,
=9.25×9.9+9.25×0.1,
=9.25×(9.9+0.1),
=9.25×10,
=92.5;
(5)4.65+6.39+5.35,
=(4.65+5.35)+6.39,
=10+6.39,
=16.39.
分析:第一道題運(yùn)用乘法的分配律計(jì)算;
第二題先算除法再運(yùn)用乘法的分配律進(jìn)行計(jì)算;
第三道題目中括號(hào)內(nèi)的運(yùn)用乘法的分配律進(jìn)行計(jì)算,再運(yùn)用除法的計(jì)算法則進(jìn)行計(jì)算;
第四題先把92.5%轉(zhuǎn)化成9.25×0.1的形式,再運(yùn)用乘法的分配律進(jìn)行計(jì)算;
第五題直接運(yùn)用加法的交換律結(jié)合律進(jìn)行計(jì)算,即可解決.
點(diǎn)評(píng):本題主要考查了乘法分配律及加法交換律、結(jié)合律的應(yīng)用.