您好,欢迎来到爱go旅游网。
搜索
您的当前位置:首页小升初四则混合运算题精选

小升初四则混合运算题精选

来源:爱go旅游网
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 (+)÷+ 10÷[﹣( ÷+)].

3.(2012?武胜县)计算,能简算的要简算.

2004+75×54÷45 (×8﹣)×4 32%×+× ×+÷

( ﹣)×( +) 1110÷[56×( ﹣)] 4.(2012?武胜县)计算. (108÷25)×(75÷18) ×(﹣÷)

( ﹣)×( +) ×[7﹣4÷( +)]. 5.(2012?万州区)计算: 9﹣= 780÷26= ×3= 27×= 625﹣199= 10+= 0÷= ×= ﹣= = 1÷= 1﹣+= 6.(2012?桐庐县)计算. ①92×13+28 ②÷﹣ ③78×

④1÷﹣÷1 ⑤×5÷×5 ⑥2﹣÷

⑦36×(+)

7.(2012?天柱县)脱式计算. 3060÷15﹣25× ×÷+

(+)×(÷5)

×[﹣(﹣)].

8.(2012?桃源县)脱式计算. 9.99×87+87 ﹣﹣

5×(+)÷2 ÷[(﹣)÷].

10.(2012?苏州)计算下面各题,能简算的要简算. 11.①630÷18×24 ②+++ ③16×+4× ④(﹣×)÷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)(÷16+)÷22 (3)×+×

(4)×÷( ﹣ )

12.(2012?硚口区)脱式计算.(友情提醒:有的可以简算) 13.800﹣608÷32×5 ﹣×+ 48×+48× (1﹣)÷×4 (6﹣6×)÷12.

14.(2012?吉水县)脱式计算,能简算的要简算.

97÷1++0×6

1375+450÷15×25 [+(13×+13×)]÷ 48×+48×+48×8 ﹣(﹣) ×+×+×.

15.(2012?洪山区)能简便的要用简便方法计算,写出主要过程 16.(1)360+240÷15×28 (2)6÷﹣× (3)×6+6× (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)×+×

(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××32

×+÷

40÷[×(+)]

17.(2011?游仙区)用自己喜欢的方法算

18.(315+285)÷(315﹣255) 5﹣(÷+) (+﹣)×36 ×+×+75%×3.

19.(2011?永州)下面各题,怎样简便就怎样计算.

20. 405×(20﹣172÷43)

×+× ﹣﹣

÷[×(﹣)].

21.(2011?武昌区)递等式计算:

360﹣225÷15×18 ÷× ﹣﹣ +÷+.

22.(2011?田东县)计算下列各题.23.860﹣560÷8×7 (+)÷

(+)×20÷ ÷[(+)×]. 24.(2011?瑞安市)

(1)360+24÷15×30 (2)×+÷ (3)×29﹣8× (4)(+﹣)÷.

25.(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)

26.109×x+109×x ﹣(+)÷

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﹣﹣ (3) (4) (5)

(6)38÷[×(+)].

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 ×+×

25.(2011?河西区)脱式计算.(能简算的要简算) 53×13+21 ×45+55×

÷[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 ÷( ﹣) ×99+

÷( ×) ×+÷ 72×(﹣)

28.(2011?丰都县)脱式计算 (384+336)÷15×13 (11+)÷16+ 2﹣×﹣ 〔1﹣(+)〕÷.

29.(2010?自流井区)计算,能简便的

要简便 (÷+370)×18 ÷+×

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) ×73﹣×2008 118÷(14+×45)

99﹣97+95﹣93+91﹣89+…+7﹣5+3﹣1

2008÷

31.(2012?咸安区)灵活计算 ① ②

. 32.(2012?仙游县)神机妙算: (+)×(﹣) ×+÷ ÷〔( ﹣)×3〕 (+)×12=

33.(2012?万州区)怎样算简便就怎样算.

①520+2613÷13 ②×5× ③(+)÷+ ④(+﹣)÷ ⑤÷%+×.

34.(2012?遂昌县)用递等式计算. ①[1﹣(+)]×36 ②(+)×36 ③×+× ④×12﹣÷

⑤×[÷(1﹣)] ⑥+(﹣)÷.

35.(2012?绍兴县)递等式计算(能简便的要简算) +÷

×+÷

(156×﹣26)×

2012+558÷18×24 +﹣+

35×(1﹣)÷.

36.(2012?平坝县)用递等式计算,能简算的要简算.

÷﹣×

﹣﹣ (+)÷+.

37.(2012?陕西)13×1+÷. 38.(2012?瑞安市)脱式计算,能简算的要简算. ÷5+

÷

(+﹣)×18.

39.(2012?乐清市)直接写得数. ﹣+=

9×(﹣)= ﹣= 12×(+)=

9﹣﹣=

÷2÷=

÷﹢÷13.

43.(2012?河池)计算下面各题,怎样简便就怎样计算.

44.(2012?汉阳区)选择合适的方法计2÷﹣÷2= ×99+= ××32=

40.(2012?金沙县)脱式计算,能简算的要简算

[25﹣(﹣)×12]÷5 ×+× 99×101 ×32× ×+×67﹣.

41.(2012?建华区)计算下面各题. 657+360÷45×19 21×

﹣(+)÷ (

)÷

42.(2012?河池)计算下面各题,怎样简便就怎样计算. ×++

﹣×﹣

算.

2929÷29×34﹣1422 ÷÷

(+﹣)×24 ﹣(+)÷

45.(2012?海港区)脱式计算 (+)÷+ 9÷[1﹣()]

÷(5+×)

46.(2012?福州)用递等式计算,能简算的要简算 ﹣+﹣= 2﹣÷×=

÷[56×(﹣)]

÷[1÷(﹣)] 47.(2012?福州)计算下面各题,能简便的要简便.

4÷÷8 ×(÷) +÷

÷〔1﹣(﹣)〕

×+×

48.(2011?沿滩区)计算. 8470﹣104×65; ×(﹣)÷; ÷×6+42; ÷(﹣)×; [﹣(﹣)]÷.

49.(2011?新邵县)下面各题,怎样算简便就怎样算

50.(2011?厦门)计算: (1)(+)÷+ (2)[1﹣(+)]÷ (3)×﹣×.

51.(2011?龙湾区)用递等式计算,能简便的要用简便方法计算. ÷×5 ÷9+×

5×(﹣)÷

48×(+﹣)

52.(2011?嘉禾县)用递等式计算下面各题:

(15﹣14×)×

21×(

53.(2011?滑县)怎样简便就怎样算

+×3

5﹣﹣

÷+×

[﹣(﹣)]÷.

54.(2011?福州)计算下列各题.(能简算的写出简算过程) (1)×+÷8+, (2)(+++)×,

55.(2011?福安市)下面各题怎么简便怎么算.

×(﹣)÷; 78÷[32×(1﹣)+144];

×﹣×; ××.

56.(2011?东莞)选择你喜欢的方法进行计算: ×27﹣ ÷(1﹣)×

9×+4×

(6﹣3)÷(13+11)

57.(2011?毕节地区)计算下面各题,要写出计算的主要过程

58.(2011?巴中)计算下面各题,注意使用简便运算. (1)

×÷

(2)÷÷

(3)(15﹣14×)×

(4)×+×

(5)

÷[(+)×]

(6)﹣﹣÷. 59.(2011?北海)

60.(2010?重庆)计算下面各题,能简算和要简算. (+)÷ ×(+) +++

61.(2012?康县)计算.(能简算的要简算) ﹣×()

÷

×[1﹣(﹣)]

48×

85×

÷23+×.

62.(2012?姜堰市)计算下面各题,能简便计算的用简便方法计算. ﹣÷×

[﹣(﹣)]÷

×+×

×99 ﹣﹣15

××.

63.(2012?丰润区)用最喜欢的方法计算 ×38× (﹣4)×(÷) ×+× ÷[

].

64.(2012?东城区)脱式计算. +32×﹣6

÷[(+)×].

65.(2012?城厢区)计算下面各题,能简算的要简算 ①96×(72﹣)÷ ②(++)×12 ③×36+36×

④[﹣(﹣)]÷. 66.(2011?温江区)计算. (1)﹣+﹣

(2)3899+3737÷37 (3)385×6÷385×6 (4)

(5)

(6)×13+×26. 67.(2011?满洲里市)

计算下面各题,能简算的要简算.﹣﹣ (×73)× +﹣+ +++

×+×﹣.

68.(2011?建华区)计算下面各题.﹣(+)÷ 15×

573+900÷36×15

)÷+.

69.(2011?邗江区)脱式计算. (+)×(﹣2.) ×(32+64)÷ ÷[×(﹣)]

×[1﹣(﹣)].

70.(2010?云龙县)用递等式计算. ①﹣+﹣ ② ②

③(﹣)÷× ④÷(×)﹣1. ④÷(×)﹣1.

71.(2010?徐闻县)计算下列各题,能简算的要简算 (1)(

)×36

(2)﹣(+)+ (3)

(4)25××32

(5)(5﹣)÷(2×﹣3) (6)27÷7+43×(1﹣)

72.(2010?霞浦县)怎样算简便就怎样算.

×16﹣4560÷15

××32 ×

73.(2010?双阳区) (1)÷﹣16× (2)÷[×(﹣) (3)÷ (4)﹣﹣+

(5)×+38× (6)×9﹣.

74.(2010?曲周县)选择你喜欢的方法计算. ﹣+﹣ ×+÷15 ÷(+)× ×17+×23

75.(2010?萝岗区)计算.(写出解答

过程,能应简便方法的要用简便方法)(1)(×8﹣)×4 (2)(+)÷﹣ (3)907+907×9﹣900 (4)9÷[+(﹣)]

76.(2010?龙湾区)用递等式计算,怎样简便就怎样算 (1)﹣+﹣

(2)375+450÷18×25 (3)×+× (4)÷(﹣)

77.(2010?龙海市)选择合适的方法,计算下面各题. ﹣﹣

920÷40﹢23×50

12×(+﹣) ×+÷1+×2 78. (2010?乐清市) (1)×+;

(2)16﹣+﹣; (3)××; (4)÷(9﹣×); (5)59+59×13+14×41. 79.(2009?重庆)脱式计算.

﹣40÷8× ×+÷

+[(﹣×700)÷] [2﹣(﹣)÷]×.

80.(2009?宜昌)用自己喜欢的方法计算.

205﹣105×12÷45 ×(﹣)÷ (+)÷ (+)÷50% 884÷34+17×21 ×(﹣)+.

81.(2009?淇滨区)计算: +×99 ﹣+﹣

×67+33×.

82.(2009?成都)1÷+×+1. 83.(2008?资中县)用递等式计算(能简算的请简算) ①﹣+﹣ ②4××× ③×+÷

④1375﹣375÷15×18 ⑤×(﹣)÷ ⑥×〔(﹣)÷〕

84.(2008?武进区)用递等式计算: ①﹣×÷; ②5÷﹣×; ③÷(5+×); ④÷(+)×; ⑤3÷×(﹣).

85.(2008?汕头)混合运算.(能简便的要写简便过程) ①×﹣×﹣ ②38﹣+﹣ ③

86.(2008?邗江区)用递等式计算,能简算的要简算

(1)18﹣÷(﹣) (2) (3)2﹣

(4)÷+×5

(5)[﹣(+)]÷ (6)÷[56×(

)]. 87.(2008?广西)灵活计算下面各题 (1)﹣﹣ (2)÷(×2﹣) (3)×32

(4)×[1﹣(﹣)]

88.(2008?大足县)脱式计算(其中④、⑤两小题必须简算).

①730﹣240÷15×16 ②[﹣(﹣)]× ③÷[(+)×] ④+++

⑤×17÷9+3÷8×. 89.(2007?浦东新区) (1)﹣﹣

(2)+÷×

(3)(+)× (4)×+× (5)2÷(﹣×)

(6)×[(﹣10)÷+].

90.(2008?长汀县)用递等式计算(能简算的要用简便方法计算). ①20﹣﹣ ②×99+ ③+×÷2 ④+÷(22﹣) ⑤×[﹣(﹣)].

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÷+, =5+, =;

(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)(×8﹣)×4, =(1﹣)×4, =×4, =2;

(3)32%×+×, =32%×+× =×(+), =×90, =;

(4)×+÷, =+,

=;

(5)( ﹣)×( +), =×, =;

(6)1110÷[56×( ﹣)], =1110÷[56×﹣56×], =1110÷[24﹣21], =1110÷3, =370

4.(1)(108÷25)×(75÷18),=

×,

=18;

(2)×(﹣÷), =×(﹣), =×, =;

(3)(﹣)×(+), =×, =;

(4)×[7﹣4÷( +)], =×[7﹣4÷], =×[7﹣4×], =×[7﹣5], =×2,

=.

5.9﹣=, 780÷26=30, ×3=, 27×=15, 625﹣199=426, 10+=, 0÷=0, ×=,

﹣=, =,

1÷=, 1﹣+=; 6.①92×13+28 =1196+28, =1224; ②÷﹣ =﹣, =; 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× =204﹣26, =178;

(2)×÷+ =×+, =+, =;

(3)(+)×(÷5) =××, =;

(4)×[﹣(﹣)].=×[+﹣], =×, =.

8.(1)99×87+87, =(99+1)×87,

=100×87, =8700; (2)﹣﹣, =﹣(+), =﹣10, =;

(3)5×(+)÷2, =5×÷2, =6÷2, =3;

(4)÷[(﹣)÷],=÷[÷], =÷, =.

9.①630÷18×24, =35×24, =840; ②+++, =(+)+(+), =5+10, =15;

③16×+4×, =(16+4)×, =20×,

=8;

④(﹣×)÷4, =(﹣)÷4, =3÷4, =;

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)(÷16+)÷22, =(+)÷22, =11÷22, =;

(3)×+×, =(+)×, =1×, =;

(4)×÷( ﹣ ), =×÷, =××12, =×12×,

=3×, =.

12.(1)800﹣608÷32×5, =800﹣19×5, =800﹣95, =705; =;

(2)1375+450÷15×25 =1375+30×25, =1375﹣750, =625;

(3)[+(13×+13×)]÷ (2)﹣×+, =﹣+, =+, =;

(3)48×+48×, =48×(+), =48×10, =480;

(4)(1﹣)÷×4, =÷×4, =1×4, =4;

(5)(6﹣6×)÷12, =(6﹣4)÷12, =2÷12, =.

13.(1)97÷1++0×6 =97++0,

=[+(13××2)]÷, =[+]÷, =×, =;

(4)48×+48×+48×8 =(++8)×48, =9×48, =432; (5)﹣(﹣) =﹣+, =0+, =;

(6)×+×+× =(+)×+×, =×+×, =(+)×, =100×, =918

14.(1)360+240÷15×28, =360+16×28, =360+448, =808; (2)6÷﹣×, =﹣, =;

(3)×6+6×, =(+)×6, =1×6, =6;

(4)(﹣)÷×, =÷×, =×, =

15.(1)43×8﹣420÷15, =344﹣28, =316;

(2)+2++3, =(+)+(3+2), =1+6, =7;

(3)×÷15, =×,

=;

(4)(+)÷﹣, =×﹣, =﹣, =; (5)×+× =×(+), =×10, =39;

(6)+(﹣)×, =+×, =+, =.

16.(1)420÷216÷18×17,=÷18×17, =×17, =

(2)25××32, =25××8×4, =(25×4)×(×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)×+×+75%×3, =(++3)×, =10×, =

18.①405×(20﹣172÷43), =405×16,

=6480; ②×+×, =×(+), =; ③﹣﹣, =﹣(+), =﹣10, =.

④÷[×(﹣)], =÷[×], =×, =3

19.(1)360﹣225÷15×18,=360﹣15×18, =360﹣270, =90;

(2)÷×, =×, =

(3)﹣﹣, =﹣(+), =﹣4, =;

(4)+÷+,

=++, =++, =1+, =1.

20.860﹣560÷8×7 =860﹣70×7, =860﹣490, =370; (+)÷ =÷, =

(+)×20÷ =(×20+×20),

=(15+16)×, =31×, =21;

÷[(+)×]. =÷[×], =

=.

21.(1)360+24÷15×30,=360+×30, =360+48, =408;

(2)×+÷, =+, =;

(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)﹣(+)÷, =﹣÷, =﹣, =; (3),

=÷+, =+, =.

23.(1)3600﹣800÷40×35, =3600﹣20×35, =3600﹣700, =2900; (2)64﹣﹣, =64﹣(+), =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÷[×(+)], =38÷[×8], =38÷20,

=

24.(1)6760÷13+17×21, =520+357, =877; (2)×+× =(+)×, =10×, =45;

(3)(+)÷(﹣) =

=; (4)

=12÷[×], =12÷, =48.

25.(1)53×13+21, =689+21,

=710;

(2)×45+55×, =×(45+55), =×100, =165;

(3)÷[1﹣(+)], =÷[1﹣],

=, =10; (3)×99+ =(99+1)×, =100×, =360;

(4)÷( ×) =.

26.(1)25×12﹣850÷17, =300﹣50, =250;

(2)×99+25%, =×(99+1), =×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,

=×, =;

(5)×+÷

=×+×, =(+)×, =1×,

=;

(6)72×(﹣)=72×﹣72×, =40﹣30, =10

28.(1)(384+336)÷=720÷15×13, =48×13, =624;

(2)(11+)÷16+,=÷16+, =+,

15×13, =;

(3)2﹣×﹣, =2﹣﹣, =2﹣(+), =2﹣1, =2;

(4)[1﹣(+)]÷, =[1﹣]÷, =÷, =.

29.(1)(÷+370)×18, =(460+370)×18, =830×18, =14940; (2)÷+×, =×+×, =(+)×, =9×, =12; (3)

,=﹣﹣﹣, =(﹣)﹣(+), =7﹣, =6;

(4)×(+++), =×(×4), =(×4)×, =10×, =.

30.(1)3618÷45+1620, =+1620, =;

(2)67﹣67×(23+19), =67×(1﹣23﹣19), =67×(﹣41), =﹣2747;

(3)×73﹣×2008, =2008×﹣×2008, =(﹣)×2008, =1×2008, =2008;

(4)118÷(14+×45), =118÷(14+), =118÷, =

(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),

=÷+, =+, =

32. (1)(+)×(﹣),=×, =;

(2)×+÷, =×+×, =×(+), =×1, =;

(3)÷[( ﹣)×3],=÷[×3], =÷, =;

(4)(+)×12, =×12+×12,

=4+9, =13

33.①520+2613÷13, =520+201, =721; ②×5×,

=××5, =×5, =;

③(+)÷+, =

+,

=+, =1;

④(+﹣)÷, =(+﹣)×42, =×42+×42﹣×42, =28+24﹣7, =52﹣7, =45;

⑤÷%+×, =×+×, =(+)×, =1×, =

34.①[1﹣(+)]×36,=[1﹣(+)]×36, =[1﹣]×36, =×36, =;

②(+)×36, =36×,

=8+21, =29; ③×+×, =×(+),

=×10, =47; ④×12﹣÷, =﹣, =208;

⑤×[÷(1﹣)], =×[÷], =

[

],

=×5, =4;

⑥+(﹣)÷, =+(﹣)×2, =+×2, =+, =.

35.(1)+÷, =+, =;

(2)×+÷, =×+×, =×(+), =×1, =;

(3)(156×﹣26)×,

=(48﹣26)×, =22×, =16;

(4)2012+558÷18×24, =2012+31×24, =2012+744, =2756; (5)+﹣+, =(﹣)+(+), =3﹣2, =1;

(6)35×(1﹣)÷, =35×÷, =20,

=48

36.(1)÷﹣×, =4﹣, =3; (2)﹣﹣, =﹣(+), =﹣10, =;

(3)(+)÷+, =

, =,

=2

37.13×1+÷ =×+×, =(+)×, =100×, =125

38.(1)÷5+,

=()×, =

=; (2)÷,=[

], =,

=;

(3)(+﹣)×18, =×18+×18﹣×18,=9+6﹣3, =15﹣3, =12

39.

﹣+=, 9×(﹣)=, ﹣=, 12×(+)=5,

9﹣﹣=8

÷2÷=,

=100;

(5)×+×67﹣, =×+×﹣, =(+﹣1)×, =10×,

2÷﹣÷2=2, ×99+=9050 ××32=1.

40. (1)[25﹣(﹣)×12]÷5, =67 =[25﹣×12]÷5, =(25﹣3)÷5 =22,

=4;

(2)×+×, =×+×, =(+)×, =1×, =;

(3)99×101, =99×(100+1), =99×100+99×1, =9900+99, =9999; (4)×32×, =×(4×8)×, =(×8)×(×4), =10×10,

41.(1)657+360÷45×19,=657+8×19, =657+152, =809; (2)21×,

=21×××, =(21×)×(×), =8×, =;

(3)﹣(+)÷, =﹣31÷, =﹣, =; (4)()÷, =÷,

=2+, =2.

42.(1)×++,

=++, =++, =2+, =2;

(2)﹣×﹣, =﹣﹣, =﹣(+), =﹣1, =;

(3)÷﹢÷13, =×+×, =(+)×, =1×, = 43.(1),=35×

=20×, =48; (2)

,=(48﹣26)×, =22×, =16; (3)

=×+×,

=×(+), =×1, =

44.(1)2929÷29×34﹣1422, =101×34﹣1422, =3434﹣1422, =2012; (2)÷÷, =(),

=

=2;

(3)(+﹣)×24, =×24+×24﹣×24, =2+6﹣8, =8﹣8, =0;

(4)﹣(+)÷, =

=,

=

45.(1)(+)÷+, =

, =

, =;

(2)9÷[1﹣()], =9÷[1﹣], =9÷, =27;

(3)÷(5+×), =÷(5+), =÷, =

46.(1)﹣+﹣, =+﹣(+), =﹣1, =;

(2)2﹣÷×, =2﹣××, =2﹣, =;

(3)÷[56×(﹣)],=÷[56×﹣56×], =÷[24﹣21], =÷3, =×, =;

(4)÷[1÷(﹣)],=÷[1÷],

=÷, =×, =; 47.(1)4÷÷8, =4÷(×8), =4÷10, =;

(2)×(÷), =×, =;

(3)+÷, =+, =2;

(4)÷[1﹣(﹣)],=÷[1﹣], =÷, =;

(5)×+×, =×(+), =×1, =

48.(1)8470﹣104×65,=8470﹣(100+4)×65,=8470﹣100×65﹣4×65,

=8470﹣6500﹣260, =1710;

(2)×(﹣)÷, =×÷, =×(÷), =×4, =;

(3)÷×6+42, =39+42, =81;

(4)÷(﹣)×, =÷×, =××, =;

(5)[﹣(﹣)]÷,=[﹣]÷, =×, =.

49.(1)2﹣÷﹣, =2﹣﹣, =2﹣(+), =2﹣1, =1;

(2)×﹣÷,

=×﹣×, =(﹣)×, =×, =;

(3)4÷﹣÷4, =5﹣, =4;

(4)÷[(﹣)×],=÷[×], =÷, =

50.(1)(+)÷+ =×+, =,

=2;

(2)[1﹣(+)]÷ =[1﹣]×, =×, =;

(3)×﹣× =

, =.

51.(1)÷×5, =×5,

=;

(2)÷9+×, =×+×, =×(+), =×1, =;

(3)5×(﹣)÷,=5×÷, =×, =;

(4)48×(+﹣), =48×+48×﹣48×, =16+12﹣24, =28﹣24, =4

52.(1)10÷+×4, =10×+×4, =18+, =18;

(2)×+×, =×(+), =×1, =;

(3)(15﹣14×)×,=(15﹣8)×, =7×, =; (4)21×(),

=21××21,

=3+14, =17

53.(1)+×3, =+, =;

(2)5﹣﹣, =5﹣(+), =5﹣1, =4;

(3)÷+×, =×+×, =(+)×, =1×, =;

(4)[﹣(﹣)]÷,=[﹣]÷, =÷, =

54.(1)×+÷8+,

=×+×+, =(++1)×, =10×, =;

(2)(+++)×, =×4×, =×(4×), =×10, =23

55.(1)×(﹣)÷ =××2, =;

(2)78÷[32×(1﹣)+144] =78÷[32×+144], =78÷[12+144], =78÷156, =;

(3)×﹣× =(﹣)×, =×, =; (4)×× =×××, =(×)×(×),

=1×, =

56.(1)×27﹣ =(27﹣1)×, =26×, =18;

(2)÷(1﹣)× =÷×, =;

(3)9×+4× =9×+×, =(9+)×, =10×, =;

(4)(6﹣3)÷(13+11)=÷,

=

57.(1)(1﹣

×70)÷,=(1﹣)×, =×, =;

(2)÷[×(+)], =÷[×], =÷,

=×, =

58.(1)×÷, =××, =;

(2)÷÷, =××, =;

(3)(15﹣14×)×,=(15﹣8)×, =7×, =;

(4)×+×, =(+)×, =1×, =;

(5)÷[(+)×],=÷[×], =÷, =×, =3;

(6)﹣﹣÷, =﹣﹣×, =﹣﹣,

=﹣(+), =﹣1, = 59.×﹣

=9﹣2=6

60.(1)(+)÷, =×, =;

(2)×(+), =×, =; (3)+++, =(+)+(+), =10+11, =21;

61.(1)﹣×(),=﹣×0, =﹣0, =;

(2)[1﹣(﹣)]÷,=[1﹣]÷, =÷, =1;

(3)×[1﹣(﹣)],=×[1﹣],

=×, =;(4)48×

=48×+48×﹣48×, =12+8﹣4, =16; (5)85×, =(86﹣1)×, =86×﹣

=85﹣ =84;

(6)÷23+× =×+×, =(+)× =1×, =.

62.(1)﹣÷×, =﹣×, =﹣, =;

(2)[﹣(﹣)]÷, =[﹣]÷, =÷, =;

(3)×+×,

=(+)×, =1×, =; (4)×99, =×(100﹣1), =×100﹣×1, =1230﹣, =;

(5)﹣﹣15, =﹣(+15), =﹣30, =;

(6)××, =8×××, =(8×)×(×), =100×, =10

63.(1)×38×, =(×)×38, =10×38, =380;

(2)(﹣4)×(÷),=×, =;

(3)×+×, =×(+), =×20, =130;

(4)÷[÷(1﹣)], =÷[÷], =÷[×], =÷, =×, =

64.(1)+32×﹣6, =+8﹣6, =;

(2)÷[(+)×], =÷[×], =÷, =5.

65.①96×(72﹣)÷, =96×÷, =1536;

②(++)×12, =×12+×12+×12, =6+4+3, =13;

③×36+36×, =(+)×36, =1×36, =36;

④[﹣(﹣)]÷, =[﹣]÷, =×, =.

66. (1)﹣+﹣, =(+)﹣(+), =40﹣20, =20;

(2)3899+3737÷37, =3899+101, =4000;

(3)385×6÷385×6, =(385÷385)×(6×6),=1×36, =36; (4),

=+×, =+, =; (5)

=8×4××, =(8×)×(4×), =10×1, =10;

(6)×13+×26, =×13+×13, =(+)×13, =100×13, =1300 67.①﹣﹣ =﹣(+), =﹣2, =;

②(×73)×, =××73, =1×73, =73; ③, =()+(

),

=

④+++, =(+)+(),

=1+1, =2;

⑤×+×﹣, =×(+﹣1), =×10, =325

68.(1)﹣(+)÷, =﹣13÷, =﹣5, =; (2)15×,

=3××, =2×, =;

(3)573+900÷36×15,=573+25×15, =573+375, =948; (4)(

)÷+,

=×+, =+, =

69.①(+)×(﹣2),=×, =;

②×(32+64)÷,

=×96÷, =×4×24÷, =24÷, =40;

③÷[×(﹣)], =÷[×()],

=÷, =,

=2;

④×[1﹣(﹣)], =×[1﹣()],

=×[1﹣], =×, =.

70.①﹣+﹣, =(+)﹣(+), =10﹣10, =0; ②

, =×[8÷], =×20, =144; ③(﹣)÷×, =÷×,

=×, =10;

④÷(×)﹣1, =÷﹣1, =﹣, = 71.(1)(

)×36,

=×36+×36+×36, =12+6+4,

=22; (2)﹣(+)+, =+﹣3, =7﹣3, =4; (3),

=(

)×,

=1×, =; (4)25××32, =24×4××8, =100×100, =10000; (5)(5﹣)÷(2×﹣3),=÷2,

=,

(6)27÷7+43×(1﹣), =, =

=10

72.①×16﹣4560÷15, =﹣304, =; ②××32,

=(×4)×(×8), =10×1, =10; ③×+÷, =×+×, =×(),

=; ④

[(

)×], =÷[()×], =

[

], =×, =1

73.(1)÷﹣16× =50﹣, =;

(2)÷[×(﹣) =[×] =

=10; (3)÷ =÷6÷, =÷, =; (4)﹣﹣+ =(+)﹣(+), =20﹣10, =10; (5)×+38× =×+×, =(+)×, =10×,

=38. (6)×9﹣ =(9﹣1)×, =8×, =10

74. (1)﹣+﹣, =(+)﹣(+), =10﹣10,

=0;

(2)×+÷15, =×+×, =(+)×, =20×, =;

(3)÷(+)×,=÷×, =××, =;

(4)×17+×23, =×14+×23, =×(14+23), =×37, =17

75.(1)(×8﹣)×4,=×8×4﹣×4, =4﹣2, =2;

(2)(+)÷﹣, =÷﹣, =﹣, =;

(3)907+907×9﹣900,=907×(1+9)﹣900, =907×10﹣900, =9070﹣900, =8170;

(4)9÷[+(﹣)], =9÷[+], =9÷, =8

76.(1)﹣+﹣, =(+)﹣(+), =11﹣10, =1;

(2)375+450÷18×25 =375+25×25 =375+625 =1000; (3)×+×, =(+)×, =4×, =;

(4)÷(﹣), =÷, =1. 77.(1)﹣﹣,

=﹣(+), =﹣11, =;

(2)920÷40﹢23×50, =23+23×50, =23+1150, =1173;

(3)12×(+﹣), =12×+12×﹣12×, =3+2﹣4, =1;

(4)×+÷1+×2, =×+×+×2, =×(++2), =×10, =

78.(1)×+, =×(10﹣)+, =×10﹣×+, =45﹣+, =+, =;

(2)16﹣+﹣, =16﹣(

),

=16﹣1, =15; (3)××, =(×8)×(×), =10×1, =10;

(4)÷(9﹣×), =÷(9﹣), =÷, =45;

(5)59+59×13+14×41,=59×(13+1)+14×41,=59×14+14×41, =(59+41)×14, =100×14, =1400

79.(1)﹣40÷8×, =﹣12, =;

(2)×+÷, =×+÷, =+×, =+, =;

(3)+[(﹣×700)÷], =+[(﹣)×], =+[(﹣)×], =+[×﹣×], =+[﹣], =+, =+, =9;

(4)[2﹣(﹣)÷]×, =[2﹣(﹣)×]×, =[2﹣×]×, =[2﹣]×, =×, =12.

80.①205﹣105×12÷45, =205﹣105×12÷45, =205﹣1260÷45, =205﹣28, =177; ②×(﹣)÷, =×3÷, =÷, =;

③(+)÷,

=()÷, =, =,

=;

④(+)÷50%, =(

=×2, =1;

⑤884÷34+17×21,=26+357, =383;

⑥×(﹣)+, =×()+, =×﹣×,

=﹣+, =4

81.(1)+×99, =×(1+99), =×100, =4578; (2)﹣+﹣, =(+)﹣(+), =11﹣10, =1;

(3)×67+33×, =(67+33)×, =100×, =40

82.1÷+×+1, =+1+1, =.

83.①﹣+﹣, =(+)﹣(+), =16﹣10, =6; ②4×××, =(4×)×(×), =10×10, =100;

③×+÷, =×+×, =(+)×, =1×, =;

④1375﹣375÷15×18,=1375﹣25×18, =1375﹣450, =925;

⑤×(﹣)÷, =×3÷, =÷, =;

⑥×[(﹣)÷], =×[÷], =××, =

84.①﹣×÷, =﹣÷, =﹣, =;

②5÷﹣×, =5×﹣×; =7﹣ =6; ③÷(5+×), =÷(5+), =÷, =;

④÷(+)×, =÷×, =××, =×,

=;

⑤3÷×(﹣), =3÷×, =3××, =4×, =2

85.(1)×﹣×﹣ =(﹣﹣1)×, =×, =××7, =×7, =;

(2)38﹣+﹣ =﹣+﹣, =(+)﹣(+), =39﹣20, =19; (3)

=×, =(

)×,

=1×, =; (4)=126×[

],

=126×, =8

86.(1)18﹣÷(﹣), =18﹣÷, =18﹣8, =10; (2)

=(+)﹣(+), =2﹣1, =1; (3)2﹣,

=2﹣××, =2﹣×, =2﹣, =1; (4)÷+×5, =9+×5, =9+, =;

(5)[﹣(+)]÷, =[﹣]÷, =÷,

=;

(6)÷[56×(

)],

=÷[56×﹣56×], =÷[24﹣21], =÷3, =

87.(1)﹣﹣, =﹣(+), =﹣20, =;

(2)÷(×2﹣), =÷(﹣), =÷, =2; (3)×32, =(×8)×4, =10×4, =40;

(4)×[1﹣(﹣)],=×[1﹣], =×, =.

88.①730﹣240÷15×16,=730﹣256, =474;

②[﹣(﹣)]×,

=[﹣]×, =×, =;

③÷[(+)×], =÷[×], =÷, =×6, =; ④+++, =(+)+(+), =11+10, =21;

⑤×17÷9+3÷8×, =×17×+3××, =×+×, =(+)×, =

89.(1)﹣﹣, =﹣(+), =﹣4, =;

(2)+÷×, =+3× =+,

=3;

(3)(+)×, =×+×, =10+1, =11; (4)×+× =(+)×, =10×, =54;

(5)2÷(﹣×) =2÷(﹣1), =2÷, =10;

(6)×[(﹣10)÷+] =×[÷+], =×[+], =×, =

90.①20﹣﹣, =20﹣(+), =20﹣1, =19; ②×99+, =×(99+1),

=×100, =907; ③+×÷2, =+÷2, =+, =;

④+÷(22﹣), =+÷, =+, =4;

⑤×[﹣(﹣)],=×[﹣], =×, =.

因篇幅问题不能全部显示,请点此查看更多更全内容

Copyright © 2019- igat.cn 版权所有

违法及侵权请联系:TEL:199 1889 7713 E-MAIL:2724546146@qq.com

本站由北京市万商天勤律师事务所王兴未律师提供法律服务