小升初四则混合运算(带答案)Word文档下载推荐.doc
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4.8)
[7﹣4÷
(+)].
5.(2012•万州区)计算:
9﹣5.4=
780÷
26=
3.14×
3=
27×
=
625﹣199=
10+0.1=
0÷
=
9.42×
0.1=
﹣=
0.42=
1÷
1﹣+=
6.(2012•桐庐县)计算.
①92×
13+28
②4.2÷
1.5﹣0.36
③78×
④1÷
﹣÷
1
⑤×
5÷
5
⑥2﹣÷
⑦36×
(+)
7.(2012•天柱县)脱式计算.
3060÷
15﹣25×
1.04
+
(+)×
(÷
5)
[﹣(﹣)].
8.(2012•桃源县)脱式计算.
99×
87+87
18.7﹣3.375﹣6.625
5×
(+0.5)÷
2
[(﹣)÷
].
9.(2012•苏州)计算下面各题,能简算的要简算.
①630÷
18×
24
②0.7+3.9+4.3+6.1
③16×
+4×
④(7.5﹣7.5×
0.6)÷
4
⑤(+÷
3)×
⑥.
10.(2012•顺昌县)脱式计算.(能简算的要简算)
①14×
75﹣624÷
39
②÷
9+×
③+(﹣)÷
④÷
[﹣(1﹣)].
11.(2012•泉州)用递等式计算
(1)1379+450÷
40
(2)(3.2÷
16+10.8)÷
22
(3)×
+×
(4)×
(﹣)
(2012•硚口区)脱式计算.(友情提醒:
有的可以简算)
800﹣608÷
32×
5
3.68﹣3.6×
0.2+0.18
48×
9.9+48×
0.1
(1﹣)÷
0.25×
4
(6﹣6×
)÷
12.
(2012•吉水县)脱式计算,能简算的要简算.
97÷
1+35.6+0×
6
1375+450÷
15×
25
[4.5+(13×
+13×
)]÷
+48×
8
94.47﹣(94.47﹣86.555)
3.42×
76.3+76.3×
5.76+9.18×
23.7.
12.(2012•洪山区)能简便的要用简便方法计算,写出主要过程
(1)360+240÷
28
(2)6÷
2.4﹣0.3×
1.4
(3)×
6+6×
(4)(﹣0.4)÷
.
15.(2012•凤阳县)用递等式计算,能简算的要简算
(1)43×
8﹣420÷
15
(2)+2++3
(4)(+)÷
﹣
(5)3.9×
9.77+0.23×
3.9
(6)+(﹣)×
16.(2011•漳州)计算下面各题,怎样简便就怎样计算.
420÷
216÷
17
25×
12.5×
32
×
40÷
[×
(+)]
17.(2011•游仙区)用自己喜欢的方法算
(315+285)÷
(315﹣255)
5﹣(÷
+)
(+﹣)×
36
3.3×
+0.75×
3.7+75%×
3.
18.(2011•永州)下面各题,怎样简便就怎样计算.
405×
(20﹣172÷
43)
×
17.31﹣6.15﹣3.85
(﹣)].
19.(2011•武昌区)递等式计算:
360﹣225÷
18
4.72﹣1.16﹣2.84
+.
20.(2011•田东县)计算下列各题.
860﹣560÷
8×
7
(5.9+1.65)÷
2.5
20÷
[(+)×
(2011•瑞安市)
(1)360+24÷
30
(2)0.25×
7.2+2.8÷
0.5
29﹣8×
(4)(+﹣)÷
21.(2011•南县)下面各题,能简算的要简算.(能简算的要写出主要简算过程)
109×
x+109×
x
9.5﹣(4.6+5.8)÷
1.3
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)
(1)3600﹣800÷
40×
35
(2)64﹣15.8﹣14.2
(3)
(4)
(5)
(6)38÷
[2.5×
(4.36+3.64)].
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+17×
21
3.33×
4.5+4.5×
6.67
25.(2011•河西区)脱式计算.(能简算的要简算)
53×
13+21
1.65×
45+55×
1.65
[1﹣(+)].
26.(2011•河池)用你喜欢的方法计算.
25×
12﹣850÷
17
99+25%
6÷
7﹣
()×
13+4÷
17.
27.(2011•海州区)神机妙算:
2842÷
14+74×
3
(﹣)
3.6×
99+3.6
(×
)
72×
(﹣)
28.(2011•丰都县)脱式计算
(384+336)÷
13
(11+30.6)÷
16+16.5
2﹣×
〔1﹣(+)〕÷
29.(2010•自流井区)计算,能简便的要简便
(73.6÷
0.16+370)×
18
3.84÷
+5.16×
30.(2010•雨花区)计算下列各题,能简便的要简便计算
3618÷
45+1620
67﹣67×
(23+19)
200.8×
73﹣6.3×
2008
118÷
(14+2.5×
45)
99﹣97+95﹣93+91﹣89+…+7﹣5+3﹣1
2008÷
200820082009.
31.(2012•咸安区)灵活计算
①
②
③
④.
参考答案:
1.①428÷
(4+4)],
=428÷
8],
4,
=107;
②127×
8,
=127÷
=8×
=64
2.
(1)9080﹣35×
26,
=9080﹣910,
=8170;
(2)17÷
3.4+1.48,
=5+1.48,
=6.48;
(3)÷
(﹣)×
(+),
=÷
,
=×
(×
),
=;
(4)3÷
=9×
=12÷
=3;
(5)(+)÷
+,
=+,
(6)10÷
+)],
=10÷
[﹣(+)],
[﹣],
=81
3.
(1)2004+75×
45,
=2004+4050÷
=2004+90,
=2094;
(2)(0.125×
=(1﹣0.5)×
=0.5×
=2;
(3)32%×
3.2,
=32%×
76.4+13.6×
0.32
=0.32×
(76.4+13.6),
90,
=28.8;
(5)(﹣)×
(+),
(6)1110÷
(﹣)],
=1110÷
﹣56×
],
[24﹣21],
3,
=370
4.
(1)(108÷
18),
=18;
(2)3.5×
4.8),
=3.5×
(20.6﹣3.5),
17.1,
=59.85;
(3)(﹣)×
(+)],
[7﹣4×
[7﹣5],
2,
=.
5.9﹣5.4=3.6,780÷
26=30,
3.14×
3=9.42,27×
=15,
625﹣199=426,10+0.1=10.1,
=0,9.42×
0.1=0.942,
﹣=,0.42=0.16,
1÷
=,1﹣+=;
6.①92×
=1196+28,
=1224;
=2.8﹣0.36,
=2.44;
=(79﹣1)×
=79×
﹣1×
=3﹣,
=4﹣,
5,
=1×
=25;
=2﹣,
=36×
+36×
=6+24,
=30.
7.
(1)3060÷
1.04
=204﹣26,
=178;
(2)×
(3)(+)×
[+﹣],
8.
(1)99×
87+87,
=(99+1)×
87,
=100×
=8700;
(2)18.7﹣3.375﹣6.625,
=18.7﹣(3.375+6.625),
=18.7﹣10,
=8.7;
(3)5×
=5×
=6÷
(4)÷
[÷
9.①630÷
24,
=35×
=840;
②0.7+3.9+4.3+6.1,
=(0.7+4.3)+(6.1+3.9),
=5+10,
=15;
=(16+4)×
=20×
=8;
=(7.5﹣4.5)÷
=3÷
=0.75;
=(+×
)×
=(+)×
=,
⑥[()],
()],
[],
=[],
=1
10.①14×
=1050﹣16,
=1034;
=+×
11.
(1)1379+450÷
40,
=1379+25×
=1379+1000,
=2379;
22,
=(0.2+10.8)÷
=11÷
=0.5;
(﹣),
12,
12×
=3×
12.
(1)800﹣608÷
=800﹣19×
=800﹣95,
=705;
(2)3.68﹣3.6×
0.2+0.18,
=3.68﹣0.72+0.18,
=2.96+0.18,
=3.14;