小升初四则混合运算(带答案)1Word格式.docx

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小升初四则混合运算(带答案)1Word格式.docx

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

(+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÷

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%

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

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﹣+=;

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;

(3)48×

0.1,

=48×

(9.9+0.1),

10,

=480;

(4)(1﹣)÷

=0.25÷

=4;

(5)(6﹣6×

=(6﹣4)÷

=2÷

13.

(1)97÷

6

=97+35.6+0,

=132.6;

(2)1375+450÷

=1375+30×

25,

=1375﹣750,

=625;

(3)[4.5+(13×

=[4.5+(13×

2)]÷

=[4.5+9.75]÷

=14.25×

=8.55;

(4)48×

8

=(++8)×

48,

=432;

(5)94.47﹣(94.47﹣86.555)

=94.47﹣94.47+86.555,

=0+86.555,

=86.555;

(6)3.42×

23.7

=(3.42+5.76)×

76.3+9.18×

23.7,

=9.18×

=(76.3+23.7)×

9.18,

=918

14.

(1)360+240÷

28,

=360+16×

=360+448,

=808;

1.4,

=2.5﹣0.42,

=2.08;

6,

=6;

15.

(1)43×

15,

=344﹣28,

=316;

(2)+2++3,

=(+)+(3+2),

=1+6,

=7;

﹣,

=﹣,

=3.9×

(9.77+0.23),

=39;

(6)+(﹣)×

16.

(1)420÷

17,

(2)25×

32,

=25×

=(25×

4)×

(12.5×

8),

100,

=10000;

(4)40÷

(+)],

=40÷

=80

17.

(1)(315+285)÷

(315﹣255),

=600÷

60,

=10;

(2)5﹣(÷

+),

=5﹣(4),

=5﹣4﹣,

(3)(+﹣)×

36,

36+×

36﹣×

=9+6﹣12,

(4)3.3×

=(3.3+3.7+3)×

0.75,

=10×

=7.5

18.①405×

43),

=405×

16,

=6480;

②×

③17.31﹣6.15﹣3.85,

=17.31﹣(6.15+3.85),

=17.31﹣10,

=7.31.

(﹣)],

=3

19.

(1)360﹣225÷

18,

=360﹣15×

=360﹣270,

=90;

(2)÷

(3)4.72﹣1.16﹣2.84,

=4.72﹣(1.16+2.84),

=4.72﹣4,

=0.72;

(4)+÷

=++,

=1+,

=1.

20.860﹣560÷

7

=860﹣70×

7,

=860﹣490,

=370;

2.5

=7.55÷

2.5,

=3.02

=(×

20+×

20),

=(15+16)×

=31×

=21;

21.

(1)360+24÷

30,

=360+×

=360+48,

=408;

0.5,

=1.8+5.6,

=7.4;

(29﹣8),

21,

=9;

=(+﹣)×

24+×

24﹣×

=20+21﹣10,

=41﹣10,

=31

22.

(1)109×

x,

=(109+109)×

=218x;

(2)9.5﹣(4.6+5.8)÷

1.3,

=9.5﹣10.4÷

=9.5﹣0.8,

(3),

=. 

23.

(1)3600﹣800÷

35,

=3600﹣20×

=3600﹣700,

=2900;

(2)64﹣15.8﹣14.2,

=64﹣(15.8+14.2),

=64﹣30,

=34;

=(40﹣27)×

=13×

(4),

=15﹣6+14,

=9+14,

=23;

(5),

=(18﹣5+1)×

=14×

(4.36+3.64)],

=38÷

20,

=1.9

24.

(1)6760÷

=520+357,

=877;

(2)3.33×

=(3.33+6.67)×

4.5,

=45;

(3)(+)÷

=48.

25.

(1)53×

13+21,

=689+21,

=710;

(2)1.65×

1.65,

=1.65×

(45+55),

=165;

[1﹣(+)],

[1﹣],

26.

(1)25×

=300﹣50,

=250;

99+25%,

=0.25×

(99+1),

(3)6÷

7﹣,

(4)()×

13+×

=+(+),

=+1,

=2.

27.

(1)2842÷

=2848÷

2+74×

=203+222,

=425;

(﹣)

(3)3.6×

3.6,

=360;

(5)×

(6)72×

=72×

﹣72×

=40﹣30,

=10

28.

(1)(384+336)÷

13,

=720÷

=624;

(2)(11+30.6)÷

16+16.5,

=41.6÷

=2.6+16.5,

=19.1;

(3)2﹣×

=2﹣﹣,

=2﹣(+),

=2﹣1,

(4)[1﹣(+)]÷

=[1﹣]÷

29.

(1)(73.6÷

=(460+370)×

=830×

=14940;

(2)3.84÷

=3.84×

=(3.84+5.16)×

=12;

=7.35﹣﹣0.35﹣,

=(7.35﹣0.35)﹣(+),

=7﹣,

(4)2.5×

(+++),

=2.5×

4),

=(2.5×

30.

(1)3618÷

45+1620,

=80.4+1620,

=1700.4;

(2)67﹣67×

(23+19),

=67×

(1﹣23﹣19),

(﹣41),

=﹣2747;

(3)200.8×

2008,

=2008×

7.3﹣6.3×

=(7.3﹣6.3)×

=2008;

(4)118÷

45),

=118÷

(14+112.5),

126.5,

(5)99﹣97+95﹣93+91﹣89+…+7﹣5+3﹣1,

=2+2+…2+2,

=2×

=50.

(6)2008÷

200820082009=;

31.

(1),

=﹣+,

=(+),

=1﹣,

(2)75﹣25×

=75×

﹣25×

=(75﹣25)×

=50×

=30;

14+×

14﹣,

=5+(14﹣1)×

=5+13×

=5+4,

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