分析:(1)化32=8×4,再運用乘法結(jié)合律解答,
(2)(4)(10)(11)(12)(16)運用乘法分配律解答,
(3)(7)(14)依據(jù)減法的性質(zhì)解答,
(5)運用加法交換律和結(jié)合律解答,
(6)(8)(13)(15)(17)依據(jù)四則運算計算方法解答,
(9)運用除法的性質(zhì)解答,
(18)根據(jù)整數(shù)部分與整數(shù)部分,分數(shù)部分與分數(shù)部分相加解答.
解答:解:(1)0.125×32×25,
=(0.125×8)×(4×25),
=1×100,
=100;
(2)128×99,
=128×(100-1),
=128×100-128×1,
=12800-128,
=12672;
(3)
-(3.14+
),
=10
-3.14-
,
=10-3.14,
=6.86;
(4)(
-
)÷
+
,
=
÷-
÷
+
,
=2-
+
,
=2;
(5)
+
+
+
,
=(
+
)+(
+
),
=
+
,
=1
;
(6)
+
÷
,
=
+
,
=1;
(7)10.9-1.6-
3,
=10.9-(1.6+3.4),
=10.9-5,
=5.9;
(8)
÷(
-
),
=
÷
,
=0.3;
(9)2÷
÷
,
=2÷(
×
),
=2÷
,
=6;
(10)6.5×99+6.5,
=6.5×(99+1),
=6.5×100,
=650;
(11)(
+
+
)×24,
=
×24+
×24+
×24,
=12+8+4,
=20+4,
=24;
(12)123×5.67+8.77×567,
=5.67×(123+877),
=5.67×1000,
=5670;
(13)2-
×
,
=2-0.3,
=1.7;
(14)2-
÷
-
,
=2-(
+
),
=2-2,
=0;
(15)
÷(1-
-
),
=
÷(
-),
=
÷,
=6;
(16)49×
,
=(48+1)×
,
=48×
+1×
,
=5+
,
=5
;
(17)(
+
)×(1-
),
=
×
,
=
;
(18)
9+
99+
999+
9999,
=(9+99+999+9999)+(
×4),
=9++(99+1)+(999+1)+(9999+1),
=9+100+1000+10000,
=11109.
點評:本題主要考查了學生運用四則運算計算方法,以及簡便算法解決問題的能力