小升初四则混合运算带答案Word格式.docx
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万州区)计算:
9-5.4=
1110-[56X(
780-26=
3.14x3=
27x
5_
625-199=10+0.1=0」
9.42x0.1=
2
0.4=
x(
]•
18.7-3.375-6.625
31
x(—+0.5)-2
亠:
]
二].
计算下面各题,
—(2
15714
9.(2012?
苏州)
能简算的要简算.
10.①630-18x24
②0.7+3.9+4.3+6.1
714
29
③16x—4x—
55
@(7.5-7.5x0.6)-4
卜9
20
⑤(
3V
⑥护[沪(冷]
10.(2012?
顺昌县)脱式计算.(能简算的要简算)
①14x75-624-39
②辛
1375+450-15x25
[4.5+(13x-J+13X-J)]-上
833
97|
48x—+48x—+48x8
1616|
94.47-(94.47-86.555)
3.42x76.3+76.3x5.76+9.18x23.7.
12.(2012?
洪山区)能简便的要用简便方法计算,写出主要过程
13.
(1)360+240-15x28
(2)
(3)
6-2.4-0.3x1.4
马4
x6+6x—
77
T
15.(2012?
凤阳县)用递等式计算,能简算的要简算
(1)43x8-420-15
(2)丄+
(4)
-0.4)-
Ex
QC
(3)亍_-15
(4)(丄4
)-一=
(5)3.9X9.77+0.23X3.9
(6)ZV)
16.(2011?
漳州)计算下面各题,
怎样简便就怎样计算.
420-216-18X17
25X12.5X32
_!
x_L+_L十E
6131?
5
40-[上X(上+二)]
n82
17.(2011?
游仙区)用自己喜欢的方法算
18.(315+285)-(315-255)
5-(L—亠+L)
7fl413
(丄+丄-二)X36
463
3.3X-J+0.75X3.7+75%X3.
19.(2011?
永州)下面各题,怎样
简便就怎样计算.
20.405X(20-172-43)
?
9
12
丄X
X
17.31-6.15-3.85
21.(2011?
武昌区)递等式计算:
360-225-15X18
4.72-1.16-2.84
22.(2011?
田东县)计算下列各题.
23.860-560-8X7
(5.9+1.65)-2.5
(2011?
瑞安市)
(1)360+24-15X30
(2)0.25X7.2+2.8-0.5
参考答案:
X29-8X二
7
27.(2011?
海州区)神机妙算:
2842-14+74X3
24
亠-丄)
&
812
南县)下面各题,
24.
算的要简算.(能简算的要写出主要简算过程)
23.(2011?
金堂县)用自己喜欢的方式计算下面各题(要写出主要的解答过程)
25.109Xx+109Xx
9.5-(4.6+5.8)—1.3
38-[2.5X(4.36+3.64)
(6)
24.(2011?
淮南)选择合适的方法计算(要写出主要的计算过程)
6760-13+17X21
3.33X4.5+4.5X6.67
1小寺)嗨].
25.(2011?
河西区)脱式计算.简算的要简算)
53X13+21
台匕佶
冃匕可
/台匕
冃匕
1.65X45+55X1.65孝[1-
26.(2011?
河池)用你喜欢的方法计算.
25X12-850-17
].
0.25X99+25%
67〒一一
X13+4-17.
:
亠
9!
■
3.6X99+3.6
二亠(丄X丄
458
'
-)
72X(^-
912
28.(2011?
丰都县)脱式计算
(384+336)-15X13
(11+30.6)-16+16.5
〔1
卫xZ-丄
4153
飞i)〕十
(2010?
自流井区)计算,能简
1CI
29.
便的要简便
(73.6-0.16+370)X18
3.84十上+5.16X里
匸菟-吕-(0*35+2)
15lb
30.(2010?
雨花区)计算下列各题,能简便的要简便计算
3618-45+1620
67-67X(23+19)
200.8X73-6.3X2008
118-(14+2.5X45)
④丄一丄.
1①428-[32-(4+4)],
=428十[32-8],
=428-4,
=107;
②127X8-127X8,
=127-127X8X8,
=8X8,
=64
2.
(1)9080-35X26,
=9080-910,
=8170;
(2)17-3.4+1.48,
=5+1.48,
=6.48;
(3)£
+(—-2)x(』+2),
9S232
:
.;
(4)3+2十空十4,
34
=9X厶十4,
便
=12十4,=3;
(5)%心丸,
=10十
81
=81
3.
(1)2004+75X54+45,
=2004+4050+45,
=2004+90,
=2094;
(2)(0.125X8-0.5)X4,
=(1-0.5)X4,
=0.5X4,
=2;
(3)32%X76.4+1.36X3.2,
=32%X76.4+13.6X0.32=0.32X(76.4+13.6),
=0.32X90,
=28.8;
(4)§
X丄旦十卫,
1叵4弓恫
=.
1&
(6)1110+[56X(冷—冷)],
\O
=1110+[56X--56X二],
ns
=1110+[24-21],=1110+3,
=370
(6)10+[
=10+[―-(
29-
可I
50
+
813
],
29
4.
(1)(108+25)X(75+18),
_108v75
=X,
2518
=18;
(2)3.5X(20.6-16.8+4.8),
=3.5X(20.6-3.5),
=3.5X17.1,
=59.85;
(3)(上-上)
2岡
=X"
④1-1-丄十1
"
=4-
=1■.■;
45
(4):
X[7-4-(
)],
⑤二X5--
14
153
X5a
_Lx
[7-4X
-]1・1-]-
[7-5],
■-.X
2,
5.9-
5.4=3.6,
780-26=30,
3.14
X3=9.42
27弋=15
625-
199=426,
10+0.仁10.1,
2-5
;
亠I
159
⑦36X(丄—)
=36乂丄+36X』,
3
0+—=0,
丄-2丄
23^
9.42
0.4
X0.1=0.942,
2=0.16,
2.
丄
1十
.21
6.①92X13+28=1196+28,
=1224;
=2.8-0.36,
=2.44;
_3_
=6+24,
=30.
7.
(1)3060-15-25X1.04
=204-26,
=178;
(2-
丄X兰2,
E42:
2S
=13
飞;
③78X
=3-存
-X
X(丄5)
24iq可
L.
■•'
=M;
-(
=8;
7.5-7.5x0.6)-4,
=(7.5-4.5)-4,
=3十4,
=0.75;
⑤(丄H十3)x
2010
8.
(1)99X87+87,
=(99+1)x87,
=100X87,=8700;
(2)18.7-3.375-6.625,=18.7-(3.375+6.625),=18.7-10,
=8.7;
5二
(2
X丄、
)
(9-
+6
)X
6
x
—,
丄丄,
20&
='
.
X(三+0.5)-2二,
44
i
=3;
4'
⑥一■[
15
_2
运.
9.①630-18X24,
=35X24,
=840;
20.7+3.9+4.3+6.1,
=(0.7+4.3)+(6.1+3.9),=5+10,
=15;
316X-+4X
=(16+4)X*,
=20x—
=1034;
②兰十9」X—
-79
+一
13
③三+
=1379+25X40,=1379+1000,=2379;
(2)(3.2-16+10.8)-22,
=(0.2+10.8)-22,
=11-22,
=0.5;
(3)X—+——X
=(=1X——
25
(2)3.68-3.6X0.2+0.18,
=3.68-0.72+0.18,
=2.96+0.18,
=3.14;
(3)48X9.9+48X0.1,
=48X(9.9+0.1),
=48X10,
=480;
(4)(1-上)十0.25X4,
=0.25-0.25X4,
=1X4,
=4;
(5)(6-6X^)+12,
=(6-4)-12,
=2-12,
13.
(1)97-1+35.6+0X6
=97+35.6+0,=132.6;
(2)1375+450-15X25
=1375+30X25,
=1375-750,
=625;
(3)[4.5+(13空+13E)]-|
(4兮存(秫),
旦X丄一,
4712
丄X丄X12,
41
显X12X
=[4.5+(13X卫X2)]十
Ig
=[4.5+9.75]-
=14.25X
=8.55;
g|
(4)48X+48X
—+—+8)
1616
=(‘
—+48X8
1S
X48,
12.
(1)800-608-32X5,
=800-19X5,
=800-95,
=9X48,
=432;
(5)94.47-
(94.47-86.555)
=705;
=94.47-94.47+86.555,
=0+86.555,
14.
(1)360+240-15X28,
=360+16X28,
=360+448,
=808;
(2)6-2.4-0.3X1.4,
=2.5-0.42,
=2.08;
(3)-^X6+6x2,
71
=(_+」)x6,
=1X6,
=6;
(4)(2-0.4)+』X」,
334
=〜X二
1534
亠二
1818?
9;
(5)3.9X9.77+0.23X3.9
=3.9X(9.77+0.23),
=3.9X10,
=39;
(6)—+(丄-」X_:
3533
二xM,
3153
■/
16.
(1)420-216-18X17,
二^-18X17,
15.
(1)43X8-420-15,
=344-28,
=316;
(2):
+2二十,
=uT+(3丄+2-?
),
-;
(2)25X12.5X32,
=25X12.5X8X4,
=(25X4)X(12.5X8),=100X100,
=10000;
=1X—,
=.
12;
(4)40*X(=)],
=40-[冬工],na
=40+—,
=80
=9協
+[
=9
.10
=3
匸],
17.
(1)(315+285)+(315-255),
=600+60,
=10;
(2)5-(
亠亠+__
1413
19.
(1)360-225+15X18,
=360-15X18,
=360-270,
=90;
=5-(4+厶),
=5-4-
=1-•
125
(3)(
-丄)X36,
县X36+丄X36-
46
X36,
=9+6-12,
(4)3.3X上+0.75X3.7+75%X3,
=(3.3+3.7+3)X0.75,
=10X0.75,
=7.5
18.①405X(20-172+43),
=405X16,
=6480;
-X(
J?
书;
_k+_
1212
③17.31-6.15-3.85,
=17.31-(6.15+3.85),
=17.31-10,
=7.31.
I91
[~,x(
(3)4.72-1.16-2.84,
=4.72-(1.16+2.84),
=4.72-4,
=0.72;
=咗,
20.860-560+8X7
=860-70X7,
=860-490,
=370;
(5.9+1.65)+2.5
=7.55+2.5,
=3.02
X20+
31
=(上X20心X20)
45
=(15+16)X
21
_31
・21
=31x_,
2'
21.
(1)360+24-15X30,=360+丄X30,=360+48,
=408;
(2)0.25X7.2+2.8-0.5,
=1.8+5.6,
=7.4;
410
一
20.
23.
(1)3600—800-40X35,
=3600—20X35,
=3600—700,
=2900;
(2)64—15.8—14.2,
=64—(15.8+14.2),
=64—30,
=34;
(3)(5&
X-I--27?
裒灵丄」
=(40—27)X_,
=13X
—X(29—8),
用
V3
=9;
—X21,
=9;
=X36-
-丄X36+
[12
-X36,
(4)兮
24?
=(丄+丄—,”JX24,
6812_5
=15-6+14,
=9+14,
=23;
X24』X24—
X24,
=20+21—10,
=41—10,
=31
=(18—5+1)x2,
=14X
X(4.36+3.64)],
22.
(1)109Xx+109Xx,
=(109+109)xx,
=218x;
(2)9.5-(4.6+5.8)-1.3,
=9.5—10.4—1.3,
=9.5—0.8,
(6)38-[2.5
=38-[2.5X8]
=38-20,
=1.9
24.
(1)6760-13+17X21,=520+357,
=877;
(2)3.33X4.5+4.5X6.67=(3.33+6.67
=10X4.5,
=45;
30
101717?
124
=12十二,
=4&
25.
(1)53X13+21,
=689+21,
=710;
(2)1.65X45+55X1.65,
=1.65X(45+55),
=1.65X100,
=165;
(3)二十[1-(丄+兰)],
239
丄[1-
=+(+_),
101717
二+1,
=2—.
27.
(1)2842-14+74X3
=2848-7-2+74X3,
=203+222,
=425;
(3)3.6
=(99+1)
=100X3.6=360;
(4)亍
二X丄
[4[9
26.
(1)25X12-850-17,
=10.
=300-50,=250;
=0.25
X(99+1),
X100,
(5)
J尼Jx1,
5775,
=25;
X匚
4.
~;
(6)72X(!
-_L)
=72x1:
-72X丄
g12
=40-30,
=10
T.35-—-(
Q35+—)
0.35-
=7.35-—
=(7.35-0.35)
1515
28.
(1)(384+336)-15X13,
=720-15X13,
=48X13,
=624;
(2)(11+30.6)-16+16.5,
=41.6-16+16.5,
=2.6+16.5,
=7丄
=_;
(4)2.5X(上),
3888
=19.1;
(3)2-_Lx亠-二,
=2.5X(=X4),
=(2.5X4)X上,
8
91
=2-1,
=10它
(4)[1-
-.
30.
(1)3618-45+1620,
=80.4+1620,
=1700.4;
=[1-
(2)67-67X(23+19),
=67X(1-23-19),
=67X(-41),
—亠
29.
(1)(73.6-0.16+370)X18,
=(460+370)X18,
=830x18,=14940;
(2)彳84送+'
16遗
=9X
=-2747;
(3)200.8X73-6.3X2008,=2008X7.3-6.3X2008,
=(7.3-6.3)X2008,
=1X2008,
=2008;
(4)118-(14+2.5X45),
=118-(14+112.5),
=118-126.5,
_236,
W;
(6)2008十
200820082009=--丄
20082008200^
=1-
=
一—?
(2)75m--25X
=50X上,
=30;
X14-
•:
■-X
=5+(14-1)X
=5+13X=5+4,
=+
二,