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
③
④
. 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
④
.
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×[﹣(﹣)],=×[﹣], =×, =.
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