小升初真题四则混合运算题

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2021年01月24日 06:44
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大学英语2课后答案-青春年少

2021年1月24日发(作者:李思彤)
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:

①
428
÷
[32
÷(
4+4
)
] ②
127
×
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< br>×(
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=
﹣
=0.4
2
=
1
÷
=1
﹣
+
=
6
.(
2012
桐庐县)计算.

①
92
×
13+28
②
4.2
÷
1.5
﹣
0.36
③
78
×

④
1
÷
﹣
÷
1
⑤
×
5
÷
×
5
⑥
2
﹣
÷

⑦
36
×(
+
)

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.
①
630
÷< br>18
×
24

②
0.7+3.9+4.3+6.1
③
16
×
+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)
①
14
×
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
)
×
÷(
﹣
)

12
.(
2012
硚口区)
脱式计算.
(友情提醒:有的可以
简算)< br>
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
.

13
.(
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+
(< br>13
×
+13
×
)
]
÷


48
×
+48
×
+48
×
8

94.47
﹣(
94.47
﹣
86.555
)


3.42
×
76.3+76.3
×
5.76+9.18< br>×
23.7
.

14
.(
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
÷
15
×
28




(
2
)
6
÷
2.4
﹣
0.3
×< br>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

(
315+285
)÷(
315
﹣
255
)

5
﹣(
÷
+
)

(
+
﹣
)×
36
3.3
×
+0.75< br>×
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
÷
15
×
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
÷


÷
[
(
+
)×
]
.

21
.(
2011
瑞安市)

(
1
)
360+24
÷
15
×
30 (
2
)
0.25
×
7.2+2.8
÷
0.5
(
3
)
×
29
﹣
8
×

(
4
)
(
+
﹣
)÷
.

22
.(
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< br>.
(
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

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.

①
520+2613
÷
13
②
×
5
×

③(
+
)÷
+

④(
+
﹣
)÷

⑤
÷
62.5%+
×
.

34
.(
2012
遂昌县)用递等式计算.

①
[1
﹣(
+
)
]
×
36
②(
+
)×
36
③
7.5
×
4.7+4.7
×
2.5
④
25.3
×
12
﹣
33.46
÷
0.35
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
3.87+1.44
﹣
0.87+0.56
35
×(
1
﹣
)÷
.

36
.< br>(
2012
平坝县)
用递等式计算,能简算的要简算.

÷
﹣
×

13.54
﹣
6.88
﹣
3.12
(
+
)÷
+
.

37
.(
201 2
陕西)
13
×
1
+86.6
÷
.

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.

﹣
+0.375=
9
×(
0.5
﹣
)
=
﹣
=
12
×(
+
)
=
÷
2
÷
=
9
﹣
﹣
=
2
÷
﹣
÷
2=
90.5
×
99+90.5=

0.125
×
0.25
×
32=
40.
(
2012
金沙县)脱式计算,能简算的要简算

[25
﹣(
﹣
)×
12]
÷
5

×
+
×

99
×
101
1.25
×
32
×
2.5
4.3
×
6. 7+0.67
×
67
﹣
6.7
.

41.
(
2012
建华区)计算下面各题.

657+360
÷
45
×
19

21
×

28.6
﹣(
12.6+18.4
)÷
1.6

(
)÷
.

42
.(
2012
河池)计算 下面各题,怎样简便就怎样计
算.

×
+
+

﹣
×
﹣

÷
﹢
÷
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)选择合适的方法计算.

2929
÷
29
×
34
﹣
1422
÷
÷

(
+
﹣
)×
24
﹣(
+
)÷

45.
(
2012
海港区)脱式计算

(
+
)÷
+

9
÷
[1
﹣(
)
]


1.02
÷(
5+0.4
×
0.25
)

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
÷
1.25
÷
8
×(
÷
)

+
÷

÷〔
1
﹣(
﹣
)
〕

×
+
×

48.
(
2011
沿滩区)计算.

8470
﹣
104
×
65
;


0.6
×(
5.3
﹣
1.7
)÷
0.9
;


5.2
÷
0.8
×
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
﹣
﹣
0.125
÷
+
×

[
﹣(
﹣
)
]
÷
.

54.(
2011
福州)计算下列各题.(能简算的写出简算
过程)

(
1
)
4.27
×
+4.73
÷
8+
,< br>
(
2
)
(
2.3+2.3+2.3+2.3
)×< br>2.5
,

55
.(
2011
福安市)下面各题怎么简便怎么算.

×(
﹣
)÷
;

78
÷
[32
× (
1
﹣
)
+144]
;

×
﹣
×
;

0.32
×
2.5
×
0.125
.

56
.(
2011
东莞)选择你喜欢的方法进行计算:

×
27
﹣

÷(
1
﹣
)×

9
×
4.25+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.

(
+
)÷

×(
+
)

6.28+5.74+3.72+5.26
61
.(
2012
康县)计算.(能简算的要简算)

1.9
﹣
1.9
×(
)

÷

×
[1
﹣(
﹣
)
]
48
×

85
×

÷
23+
×
.

62< br>.
(
2012
姜堰市)
计算下面各题,能简便计算的用简
便方 法计算.

4.82
﹣
5.2
÷
0.8
×
0.6
[
﹣(
﹣
)
]
÷

×
+
×

12.3
×
99
57.5
﹣
14.25
﹣
15

3.2
×
12.5
×
0.25
.
63.
(
2012
丰润区)用最喜欢的方法计算


12.5
×
38
×
0.8

(
8.5< br>﹣
4
)×(
0.32
÷
1.6
)

6.5
×
4.6+6.5
×
15.4

÷
[
]
.

64.
(
2012
东城区)脱式计算.

0.6+32
×
0.25
﹣
6

÷
[
(
+
)×
]
.

65
.(
2012
城厢区)计算下面各题,能简算的要简算

①
96
×(
72
﹣
14.4
)÷
3.6
②(
+
+
)×
12
③
×
36+36
×

④
[
﹣(
﹣
)
]
÷
.

66
.(
2011
温江区)计算.

(
1
)
22.7
﹣
1.8+17.3
﹣
18.2
(
2
)
3899+3737
÷
37
(
3
)
385
×
6
÷
385
×
6
(
4
)

(
5
)

(
6
)
38.4
×
13+30.8
×
26
.

67.
(
2011
满洲里市)

计算下面各题,能简算的要简算.

6.8
﹣
1.36
﹣
0.64

(
2.5
×
73
)×
0.4
+
﹣
+

0.25+
+
+

32 .5
×
1.7+32.5
×
9.3
﹣
32.5
.< br>
68.
(
2011
建华区)计算下面各题.

13.5
﹣(
6.9+6.1
)÷
2.6
15
×

573+900
÷
36
×
15

(
)÷
+
.

69.
(
2011
邗江区)脱式计算.

(
2.8+4.6
)×(
2.6
﹣
2
.)

0.25
×(
32+64
)÷
0.6
÷
[
×(
﹣
)
]
×
[1
﹣(
﹣
)
]
.

70.
(
2010
云龙县)用递等式计算.

①
3.6
﹣
2.8+6.4
﹣
7.2

②

③(
6.9
﹣
3.15
)÷
0.3< br>×
0.8

④
÷(
×
)﹣
1
.

71.
(< br>2010
徐闻县)计算下列各题,能简算的要简算
(
1
)(
) ×
36


(
2
)
5.28
﹣(
2.56+0.44
)
+1.72

(
3
)

(
4
)
25
×
12.5
×
32

(
5
)(
5
﹣
4.75
)÷(
2
×
2.5
﹣
3
)


(
6
)27
÷
7+43
×(
1
﹣
)

72.
(
2010
霞浦县)怎样算简便就怎样算.

20.3
×
16
﹣
4560
÷
15

2.5
×
0.125
×
32
6.3
×
.

73.
(
2010
双阳区)

(
1
)40.5
÷
0.81
﹣
16
×
2.4

(
2
)
÷
[
×(
﹣
)

(
3
)
6.72
÷
1.2
(
4
)
18.1
﹣
5.7
﹣
4.3+1.9
(
5
)
3.8
×
4.2+38
×
0.58

(
6
)
1.25
×
9
﹣
1.2 5
.

74.
(
2010
曲周县)选择你喜欢的方法计算.

3.6
﹣
2.8+6.4
﹣
7.2

6.3
×
+13.7
÷
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
)
(
0.125
×
8
﹣
0.5
)×
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
)
3.7
﹣
2.2+7.3
﹣
7.8
(
2
)
375+450
÷
18
×
25
(
3
)
2.9
×
+1.1
×

(
4
)
÷(
﹣
)

77.
(
2010
龙海市)选择合适的方法,计算下面各题.

18.7
﹣
4.375
﹣
6.625

920
÷
40
﹢
23
×
50
12
×(
+
﹣
)

4.4
×
+ 3.6
÷
1
+0.75
×
2

78.
(
2010
乐清市)

(
1
)
4.5
×
9.9+0.1
;

(
2
)
16
﹣
+
﹣
;

(
3
)
1.25
×
2.5
×
3.2
;
(
4
)
8.1
÷(
9
﹣
6.3×
1.4
);

(
5
)
59+59
×
13+14
×
41
.

79
.(
2009
重庆)脱式计算.

30.5
﹣
40
÷
8
×
2.4
1.6
×
+
÷
2.4
8.5+[
(
﹣< br>0.005
×
700
)÷
]
[2
﹣(
﹣
1.5
)÷
]
×
.

80.
(
2009
宜昌)用自己喜欢的方法计算.

205
﹣
105
×
12
÷
45

1.05
×(
3.8
﹣
0.8
)÷
6.3

(
+
)÷

(
+
)÷
50%


884
÷
34+17
×
21

3.75
×(
1.2
﹣
)
+
.

81
.(
2009
淇滨区)计算:

45.78+45.78
×
99
3.6
﹣
2.8+7.4
﹣
7.2
×
67+33
×
.

82
.(
2009< br>成都)
1
÷
2.5+2.5
×
0.4+1
.

83.
(
2008
资中县)用递等式计算(能简算的请简算)

①
7.6
﹣
4.8+8.4
﹣
5.2
②
4
×
0.8
×
2.5
×
1.25

③
×
+
÷

④
1375
﹣
375
÷
15
×
18

⑤
1.05
×(
3.8
﹣
0.8
)÷< br>6.3

⑥
×〔
(
﹣
)÷
〕

84
.(
2008
武进区)用递等式计算:

①
0 .6
﹣
0.2
×
1.9
÷
7.6
;

②
5
÷
﹣
×
;

③
1.02÷(
5+0.4
×
0.25
);

④
÷(
+
)×
;

⑤
3
÷
×(
﹣
).

85
.(
2008
汕头)
混合运算.
(能简便的要写简便过程)
①4.5
×
8.8
﹣
2.2
×
4.5
﹣
4.5
②
38
﹣
15.4+0.125
﹣
4.6
③

④
.

86
.(
2008
邗江区)用递等式计算,能简算的要简算

(
1
)
18
﹣
10.4
÷(
6.2
﹣< br>4.9
)

(
2
)



(
3
)
2
﹣

(
4
)
3.6
÷
0.4+1.3
×
5 < br>(
5
)
[6.85
﹣(
0.75+0.2
)
]
÷
0.5
(
6
)
÷
[56
×(
)
]
.

87
.(
2008
广西)灵活计算下面各题

(
1
)
54.75
﹣
5.25
﹣
14.75

(
2
)
16.4
÷(
4.3
×
2
﹣0.4
)

(
3
)
1.25
×
32

(
4
)
×
[1
﹣(
﹣
)
] 88
.
(
2008
大足县)脱式计算
(其中④、⑤两小题必须< br>简算).

①
730
﹣
240
÷
15
×
16
②
[2.06
﹣(
1.73
﹣
0.29
)
]×
1.5
③
÷
[
(
+
)×
]
④
6.8+2.37+7.63+4.2
⑤
×
17
÷9+3
÷
8
×
.

89.
(
2007
浦东新区)

(
1
)
13.72
﹣
1.65
﹣
2.35
(
2
)
2.4+3.6
÷
1.2
×
0.2
(
3
)
(
12.5+1.25
)×
0.8
(
4
)
5.4
×
7.2+2.8
×
5.4
(
5
)
2
÷(
1.2
﹣
0.4
×
2.5
)

(
6
)
0.3
×
[< br>(
13.4
﹣
10
)÷
0.5+1.5]
.

90
.
(
2008
长汀县)用递等式计算
(能简算的要用简 便
方法计算).

①
20
﹣
﹣

②
9.07
×
99+9.07
③
+
×
÷
2
④
2.3+3.91
÷(< br>22
﹣
19.7
)

⑤
×
[
﹣(
﹣
)
]
.

参考答案:

1
.①
428
÷
[32
÷(
4+4
)
]
,

=428
÷
[32
÷
8]
,

=428
÷
4
,

=107
;

②
127
×
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
)
÷(
﹣
)×(
+
),
=
÷
×< br>,

=
×(
×
),

=
×
,

=
;

(
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
;

(< br>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
.(< br>1
)
(
108
÷
25
)×(
75
÷
18
),
=
×
,

=18
;
< br>(
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
,

﹣
=
,
0.4
2
=0.16
,

1
÷
=
,
1
﹣
+
=
;

6
.①
92
×
13+28
=1196+28
,

=1224
;

②
4.2
÷
1.5
﹣
0.36
=2.8
﹣
0.36
,

=2.44
;

③
78
×

=
(
79
﹣
1
)×
,

=79
×
﹣
1
×
,

=3
﹣
,

=2
;

④
1
÷
﹣
÷
1
=4
﹣
,

=3
;

⑤
×
5
÷
×
5
=
×
5
×
5
,

=1
×
5
×
5
,

=25
;

⑥
2
﹣
÷

=2
﹣
,

=
;

⑦
36
×(
+
)

=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< br>,

=18.7
﹣(
3.375+6.625
),

=18.7
﹣
10
,

=8.7
;
(
3
)
5
×(
+0.5
)÷
2
,
=5
×
÷
2
,

=6
÷
2
,

=3
;

(
4
)
÷
[
(
﹣
)÷
]
,

=
÷
[
÷
]
,

=
÷
,

=
.

9
.①
630
÷
18
×
24
,

=35
×
24
,

=840
;

②
0.7+3.9+4.3+6.1
,

=
(
0. 7+4.3
)
+
(
6.1+3.9
),

=5+10
,

=15
;

③
16
×
+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
.①
14
×
75
﹣
624
÷
39
=1050
﹣
16
,

=1034
;

②
÷
9+
×

=
×
+
×
,

=
(
+
)×
,

=
×
,

=
;

③
+
(
﹣
)÷

=
+
×
,

=
+
,

=
;

④
÷
[
﹣(
1
﹣
)
]
.

=
÷
[
﹣
]
,

=
,

=
.

11
.(
1
)
1379+450< br>÷
18
×
40
,
=1379+25
×
40< br>,

=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< br>,

=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
,< br>
=
(
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
;
< br>(
3
)
[4.5+
(
13
×
+13
×
)
]
÷

=[4.5+
(
13
×
×
2
)
]
÷
,

=[4.5+9.75]
÷
,

=14.25
×
,

=8.55
;

(< br>4
)
48
×
+48
×
+48
×
8
=
(
+
+8
)×
48
,

=9
×
48
,

=432
;

(
5
)
94.47
﹣(
94.47
﹣
86.555< br>)

=94.47
﹣
94.47+86.555
,

=0+86.555
,

=86.555
;

(< br>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
÷< br>216
÷
18
×
17
,
=
÷
18< br>×
17
,

=
×
17
,

=
;

(
2
)
25
×
12.5< br>×
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%< br>×
3
,

=
(
3.3+3.7+3
)×
0.75
,

=10
×
0.75
,

=7.5
18
. ①
405
×(
20
﹣
172
÷
43
),< br>
=405
×
16
,

=6480
;

②
×
+
×
,

=
×(
+
),

=
;

③
17.31
﹣
6.15
﹣
3.85
,

=17.31
﹣(
6.15+3.85
),

=17.31
﹣
10
,

=7.31
.

④
÷
[
×(
﹣
)
]
,

=
÷
[
×
]
,

=
×
,

=3
19
.(
1
)< br>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
,< br>
=360+48
,

=408
;

(2
)
0.25
×
7.2+2.8
÷
0.5
,< br>
=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
.(< br>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< br>)
1.65
×
45+55
×
1.65
,

=1.65
×(
45+55
),

=1.65
×
100
,

=165
;
< br>(
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
.(< br>1
)
2842
÷
14+74
×
3
=284 8
÷
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
,< br>
=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< br>,
=
(
460+370
)×
18
,

=830
×
18
,

=14940
;
< br>(
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
.(< br>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
,< br>
=
(
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
,


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少


大学英语2课后答案-青春年少