小升初四则混合运算带答案

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小升初真题混合运算专项练习(有答案)
1.(2012?瑶海区)基本计算:
①428÷[32÷(4+4)]
②127×8÷127×8 2.(2012?武胜县)计算.9080﹣35×26
17÷3.4+1.48
÷(﹣)×(+)3÷÷÷4
(+)÷+
10÷[﹣(÷+)].3.(2012?武胜县)计算,能简算的要简算.
2004+75×54÷45 (0.125×8﹣0.5)×4 32%×76.4+1.36×3.2
×+÷
(﹣)×(+)1110÷[56×(﹣)] 4.(2012?武胜县)计算.(108÷25)×(75÷18)3.5×(20.6﹣16.8÷
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.
10.①630÷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÷18×40 (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×+48×+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 13.(1)360+240÷15×28
(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 (3)×÷15 (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÷18×17 25×12.5×32
×+÷
40÷[×(+)] 17.(2011?游仙区)用自己喜欢的方法算 18.(315+285)÷(315﹣255) 5﹣(÷+)
(+﹣)×36
3.3×+0.75×3.7+75%×3.
19.(2011?永州)下面各题,怎样简便就怎样计算.
20. 405×(20﹣172÷43) ×+× 17.31﹣6.15﹣3.85 ÷[×(﹣)]. 21.(2011?武昌区)递等式计算: 360﹣225÷15×18 ÷×
4.72﹣1.16﹣ 2.84 +÷+.
22.(2011?田东县)计算下列各题. 23. 860﹣560÷8×7 (5.9+1.65)÷2.5 (+)×20÷ ÷[(+)×]. (2011?瑞安市)
(1)360+24÷15×30
(2)0.25×7.2+2.8÷0.5
(3)×29﹣8× (4)(+﹣)÷. 24.(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) 25. 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 0.25×99+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)÷15×13 (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÷
31.(2012?咸安区)灵活
计算



④.
参考答案:
1.①428÷[32÷(4+4)],=428÷[32÷8],
=428÷4,
=107;
②127×8÷127×8,
=127÷127×8×8,
=8×8,
=64
2.(1)9080﹣35×26,=9080﹣910,
=8170;
(2)17÷3.4+1.48,=5+1.48,
=6.48;
(3)÷(﹣)×(+),
=÷×,
=×(×),
=×,
=;
(4)3÷÷÷4,
=9×÷4,
=12÷4,
=3;
(5)(+)÷+,
=×,
=+,
=;
(6)10÷[﹣(÷
+)],
=10÷[﹣(+)],
=10÷[﹣],
=10÷,
=81
3.(1)2004+75×54÷45,
=2004+4050÷45,
=2004+90,
=2094;
(2)(0.125×8﹣0.5)×4,
=(1﹣0.5)×4,
=0.5×4,
=2;
(3)32%×76.4+1.36×3.2,
=32%×76.4+13.6×0.32 =0.32×(76.4+13.6),=0.32×90,
=28.8;
(4)×+÷,
=+,
=;
(5)(﹣)×(+),=×,
=;
(6)1110÷[56×(﹣)],
=1110÷[56×﹣56×],
=1110÷[24﹣21],
=1110÷3,=370
4.(1)(108÷25)×(75
÷18),
=×,
=18;
(2)3.5×(20.6﹣16.8
÷4.8),
=3.5×(20.6﹣3.5),
=3.5×17.1,
=59.85;
(3)(﹣)×(+),
=×,
=;
(4)×[7﹣4÷
(+)],
=×[7﹣4÷],
=×[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÷=0, 9.42
×0.1=0.942,
﹣=,
0.42=0.16,
1÷=, 1﹣
+=;
6.①92×13+28
=1196+28,
=1224;
②4.2÷1.5﹣0.36
=2.8﹣0.36,
=2.44;
③78×
=(79﹣1)×,
=79×﹣1×,
=3﹣,
=2;
④1÷﹣÷1
=4﹣,
=3;
⑤×5÷×5
=×5×5,
=1×5×5,
=25;
⑥2﹣÷
=2﹣,
=;
⑦36×(+)
=36×+36×,
=6+24,
=30.
7.(1)3060÷15﹣25×1.04
=204﹣26,
=178;
(2)×÷+
=×+,
=+,
=;
(3)(+)×(÷5)=××,
=;
(4)×[﹣(﹣)].=×[+﹣],
=×,
=.8.(1)99×87+87,
=(99+1)×87,
=100×87,
=8700;
(2)18.7﹣3.375﹣
6.625,
=18.7﹣(3.375+6.625),
=18.7﹣10,
=8.7;
(3)5×(+0.5)÷2,
=5×÷2,
=6÷2,
=3;
(4)÷[(﹣)÷],
=÷[÷],
=÷,
=.
9.①630÷18×24,
=35×24,
=840;
②0.7+3.9+4.3+6.1,
=(0.7+4.3)+(6.1+3.9),
=5+10,
=15;
③16×+4×,
=(16+4)×,
=20×,
=8;
④(7.5﹣7.5×0.6)÷4,
=(7.5﹣4.5)÷4,
=3÷4,
=0.75;
⑤(+÷3)×,
=(+×)×,
=(+)×,
=,
=;
⑥[()],
=×[÷()],
=×[],
=[],
=,
=1
10.①14×75﹣624÷39
=1050﹣16,
=1034;
②÷9+×
=×+×,
=(+)×,
=×,
=;
③+(﹣)÷
=+×,
=+,
=;
④÷[﹣(1﹣)].=÷[﹣],
=,
=.
11.(1)1379+450÷18×40,
=1379+25×40,
=1379+1000,
=2379;
(2)(3.2÷16+10.8)÷22,
=(0.2+10.8)÷22,
=11÷22,
=0.5;
(3)×+×,
=(+)×,
=1×,=;
(4)×÷(﹣),
=×÷,
=××12,
=×12×,
=3×,
=.
12.(1)800﹣608÷32
×5,
=800﹣19×5,
=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)48×9.9+48×0.1,
=48×(9.9+0.1),
=48×10,
=480;
(4)(1﹣)÷0.25×4,
=0.25÷0.25×4,
=1×4,
=4;
(5)(6﹣6×)÷12,
=(6﹣4)÷12,
=2÷12,
=.
13.(1)97÷1+35.6+0
×6
=97+35.6+0,
=132.6;
(2)1375+450÷15×25
=1375+30×25,
=1375﹣750,
=625;
(3)[4.5+(13×+13
×)]÷
=[4.5+(13××2)]÷,
=[4.5+9.75]÷,
=14.25×,
=8.55;
(4)48×+48×+48
×8
=(++8)×48,
=9×48,
=432;
(5)94.47﹣(94.47﹣86.555)
=94.47﹣94.47+86.555,=0+86.555,
=86.555;
(6)3.42×76.3+76.3
×5.76+9.18×23.7
=(3.42+5.76)×
76.3+9.18×23.7,
=9.18×76.3+9.18×23.7,
=(76.3+23.7)×9.18,=100×9.18,
=918
14.(1)360+240÷15×28,
=360+16×28,
=360+448,
=808;
(2)6÷2.4﹣0.3×1.4,=2.5﹣0.42,
=2.08;
(3)×6+6×,
=(+)×6,=1×6,
=6;
(4)(﹣0.4)÷×,
=÷×,
=×,
=
15.(1)43×8﹣420÷15,
=344﹣28,
=316;
(2)+2++3,
=(+)+(3+2),
=1+6,
=7;
(3)×÷15,
=×,
=;
(4)(+)÷﹣,
=×﹣,
=﹣,
=;
(5)3.9×9.77+0.23×
3.9
=3.9×(9.77+0.23),
=3.9×10,
=39;
(6)+(﹣)×,
=+×,
=+,
=.
16.(1)420÷216÷18
×17,
=÷18×17,
=×17,
=;
(2)25×12.5×32,
=25×12.5×8×4,
=(25×4)×(12.5×8),
=100×100,
=10000;
(3)×+÷,
=×+×,
=(+)×,
=1×,
=;
(4)40÷[×(+)],
=40÷[×],
=40÷,
=80
17.(1)(315+285)÷(315﹣255),
=600÷60,
=10;
(2)5﹣(÷+),=5﹣(4),
=5﹣4﹣,
=;
(3)(+﹣)×36,=×36+×36﹣×36,=9+6﹣12,
=3;
(4)3.3×+0.75×
3.7+75%×3,
=(3.3+3.7+3)×0.75,=10×0.75,
=7.5
18.①405×(20﹣172÷43),
=405×16,
=6480;
②×+×,
=×(+),
=;③17.31﹣6.15﹣3.85,
=17.31﹣(6.15+3.85),
=17.31﹣10,
=7.31.
④÷[×(﹣)],
=÷[×],
=×,
=3
19.(1)360﹣225÷15
×18,
=360﹣15×18,
=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÷8×7
=860﹣70×7,
=860﹣490,
=370;
(5.9+1.65)÷2.5
=7.55÷2.5,
=3.02
(+)×20÷
=(×20+×20),
=(15+16)×,
=31×,
=21;
÷[(+)×].
=÷[×],
=,
=.
21.(1)360+24÷15×30,
=360+×30,
=360+48,
=408;
(2)0.25×7.2+2.8÷
0.5,
=1.8+5.6,
=7.4;
(3)×29﹣8×,
=×(29﹣8),
=×21,
=9;
(4)(+﹣)÷,=(+﹣)×24,
=×24+×24﹣×24,=20+21﹣10,
=41﹣10,
=31
22.(1)109×x+109×x,=(109+109)×x,
=218x;
(2)9.5﹣(4.6+5.8)÷1.3,
=9.5﹣10.4÷1.3,
=9.5﹣0.8,
=8.7;
(3),=÷+,
=+,
=.23.(1)3600﹣800÷40
×35,
=3600﹣20×35,
=3600﹣700,
=2900;
(2)64﹣15.8﹣14.2,
=64﹣(15.8+14.2),
=64﹣30,
=34;
(3),
=(40﹣27)×,
=13×,
=9;
(4),
=×36﹣×36+×
36,
=15﹣6+14,
=9+14,
=23;
(5),
=(18﹣5+1)×,
=14×,
=9;
(6)38÷[2.5×
(4.36+3.64)],
=38÷[2.5×8],
=38÷20,
=1.9
24.(1)6760÷13+17×
21,
=520+357,
=877;
(2)3.33×4.5+4.5×
6.67
=(3.33+6.67)×4.5,
=10×4.5,
=45;
(3)(+)÷(﹣)
=,
=;
(4)
=12÷[×],
=12÷,
=48.
25.(1)53×13+21,
=689+21,
=710;
(2)1.65×45+55×
1.65,
=1.65×(45+55),
=1.65×100,
=165;
(3)÷[1﹣(+)],=÷[1﹣],
=,
=.
26.(1)25×12﹣850÷17,
=300﹣50,
=250;
(2)0.25×99+25%,
=0.25×(99+1),
=0.25×100,
=25;
(3)6÷7﹣,
=﹣,
=;
(4)()×13+4÷17,
=×13+×13+4÷17,=++,=+(+),
=+1,
=2.
27.(1)2842÷14+74×3
=2848÷7÷2+74×3,
=203+222,
=425;
(2)÷(﹣)
=×12,
=10;
(3)3.6×99+3.6
=(99+1)×3.6,
=100×3.6,
=360;
(4)÷(×)
=×,
=;
(5)×+÷
=×+×,
=(+)×,
=1×,
=;
(6)72×(﹣)
=72×﹣72×,
=40﹣30,
=10
28.(1)(384+336)÷15
×13,
=720÷15×13,
=48×13,
=624;
(2)(11+30.6)÷
16+16.5,
=41.6÷16+16.5,
=2.6+16.5,
=19.1;
(3)2﹣×﹣,
=2﹣﹣,
=2﹣(+),
=2﹣1,
=2;
(4)[1﹣(+)]÷,
=[1﹣]÷,
=÷,
=.
29.(1)(73.6÷
0.16+370)×18,
=(460+370)×18,
=830×18,
=14940;
(2)3.84÷+5.16×,=3.84×+5.16×,
=(3.84+5.16)×,
=9×,
=12;
(3)

=7.35﹣﹣0.35﹣,=(7.35﹣0.35)﹣(+),
=7﹣,
=6;
(4)2.5×(+++),=2.5×(×4),
=(2.5×4)×,
=10×,
=.
30.(1)3618÷45+1620,=80.4+1620,
=1700.4;
(2)67﹣67×(23+19),=67×(1﹣23﹣19),=67×(﹣41),
=﹣2747;
(3)200.8×73﹣6.3×
2008,
=2008×7.3﹣6.3×
2008,
=(7.3﹣6.3)×2008,
=1×2008,
=2008;
(4)118÷(14+2.5×
45),
=118÷(14+112.5),
=118÷126.5,
=;
(5)99﹣97+95﹣93+91
﹣89+…+7﹣5+3﹣1,
=2+2+…2+2,
=2×25,
=50.
(6)2008÷;
31.(1),
=﹣+,
=(+),
=1﹣,
=;
(2)75﹣25×,
=75×﹣25×,
=(75﹣25)×,
=50×,
=30;
(3)

=×14+×14﹣,
=5+(14﹣1)×,
=5+13×,
=5+4,
=9;
(4),
=÷+,
=+,
=。

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