分析:(1)根據(jù)乘法分配律進(jìn)行計算;
(2)101=100+1,再根據(jù)乘法分配律進(jìn)行計算;
(3)根據(jù)加法交換律和結(jié)合律以及減法的性質(zhì)進(jìn)行計算;
(4)先算乘法和除法,再算加法;
(5)中括號里面的根據(jù)乘法分配律進(jìn)行計算,再算除法,最后算加法;
(6)先算除法,再算乘法.
解答:解:
(1)
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)51×101,
=51×(100+1),
=51×100+51×1,
=5100+51,
=5151;
(3)10.25-3.75-6.25+7.75,
=(10.25+7.75)-(3.75+6.25),
=18-10,
=8;
(4)35×12+350÷70,
=420+5,
=425;
(5)3+0.7÷[(
-
)×24],
=3+0.7÷[
×24-
×24],
=3+0.7÷[20-6],
=3+0.7÷14,
=3+0.05,
=3.05;
(6)
÷
×
,
=
×
,
=
.
點(diǎn)評: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)行簡便計算.