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一、在$◯$里填“＞”“＜”或“=”。
$27÷ 100◯$
$0.52× 1000◯$
$2.6÷ 2◯$
$0.78× 15◯$
$0.465× 1000◯$
$3.8÷ 100◯$
$4.32÷ 4◯$
$5.55÷ 5◯$
$140÷ 1000◯$
$0.24× 1000◯$
$8.7× 10◯$
$290÷ 1000◯$
$27÷ 100◯$
＜
$27÷ 10$ $0.52× 1000◯$
＜
$5.2× 10000$ $2.6÷ 2◯$
=
$0.26× 5$ $0.78× 15◯$
＞
$0.78÷ 20$ $0.465× 1000◯$
＞
$4.65÷ 10$ $3.8÷ 100◯$
＜
$0.038× 100$ $4.32÷ 4◯$
＜
$1.08× 5$ $5.55÷ 5◯$
＞
$0.055× 4$ $140÷ 1000◯$
＜
$0.14× 10$ $0.24× 1000◯$
＞
$2.4× 10$ $8.7× 10◯$
＞
$8700÷ 1000$ $290÷ 1000◯$
＞
$2.9÷ 100$答案
一、＜ ＜ = ＞ ＞ ＜ ＜ ＞ ＜ ＞ ＞ ＞
二、单位换算。
45厘米= (
65公顷= (
0.84平方米= (
45厘米= (
0.45
)米 7060毫升= (7.06
)升65公顷= (
0.65
)平方千米 3.27吨= (3270
)千克0.84平方米= (
84
)平方分米 0.42千克= (420
)克答案
二、0.45 7.06 0.65 3270 84 420
解析
45厘米=0.45米
7060毫升=7.06升
65公顷=0.65平方千米
3.27吨=3270千克
0.84平方米=84平方分米
0.42千克=420克
7060毫升=7.06升
65公顷=0.65平方千米
3.27吨=3270千克
0.84平方米=84平方分米
0.42千克=420克
三、用竖式计算,带*的要验算。
$4.89× 12$ $36× 0.38$ *$37.6÷ 47$
$2.1÷ 14$ $0.75× 32$ *$0.55× 16$
$10.29× 21$ $55× 1.22$ *$4.68÷ 52$
$8.34÷ 3$ $5.19× 5$ *$20.48÷ 8$
$3.4× 48$ $55.8÷ 3$ *$54.4÷ 34$
$21.2× 41$ $6.18× 22$ *$43.2÷ 27$
$31.92÷ 16$ $0.34× 19$ *$4.16÷ 16$
$4.89× 12$ $36× 0.38$ *$37.6÷ 47$
$2.1÷ 14$ $0.75× 32$ *$0.55× 16$
$10.29× 21$ $55× 1.22$ *$4.68÷ 52$
$8.34÷ 3$ $5.19× 5$ *$20.48÷ 8$
$3.4× 48$ $55.8÷ 3$ *$54.4÷ 34$
$21.2× 41$ $6.18× 22$ *$43.2÷ 27$
$31.92÷ 16$ $0.34× 19$ *$4.16÷ 16$
答案
三、58.68 13.68 0.8 0.15 24 8.8 216.09 67.1 0.09 2.78 25.95 2.56 163.2 18.6 1.6 869.2 135.96 1.6 1.995 6.46 0.26
解析
4.89×12=58.68
```
4.89
× 12
----
978
489
----
58.68
```
36×0.38=13.68
```
36
×0.38
----
288
108
----
13.68
```
*37.6÷47=0.8
```
0.8
47)37.6
376
---
0
```
验算：
```
47
×0.8
----
37.6
```
2.1÷14=0.15
```
0.15
14)2.10
14
---
70
70
---
0
```
0.75×32=24
```
0.75
× 32
----
150
225
----
24.00
```
*0.55×16=8.8
```
0.55
× 16
----
330
55
----
8.80
```
验算：
```
16
×0.55
----
80
80
----
8.80
```
10.29×21=216.09
```
10.29
× 21
----
1029
2058
----
216.09
```
55×1.22=67.1
```
55
×1.22
----
110
110
55
----
67.10
```
*4.68÷52=0.09
```
0.09
52)4.68
468
---
0
```
验算：
```
52
×0.09
----
4.68
```
8.34÷3=2.78
```
2.78
3)8.34
6
---
23
21
---
24
24
---
0
```
5.19×5=25.95
```
5.19
× 5
----
25.95
```
*20.48÷8=2.56
```
2.56
8)20.48
16
---
44
40
---
48
48
---
0
```
验算：
```
2.56
× 8
----
20.48
```
3.4×48=163.2
```
3.4
×48
----
272
136
----
163.2
```
55.8÷3=18.6
```
18.6
3)55.8
3
---
25
24
---
18
18
---
0
```
*54.4÷34=1.6
```
1.6
34)54.4
34
---
204
204
---
0
```
验算：
```
34
×1.6
----
204
34
----
54.4
```
21.2×41=869.2
```
21.2
× 41
----
212
848
----
869.2
```
6.18×22=135.96
```
6.18
× 22
----
1236
1236
----
135.96
```
*43.2÷27=1.6
```
1.6
27)43.2
27
---
162
162
---
0
```
验算：
```
27
×1.6
----
162
27
----
43.2
```
31.92÷16=1.995
```
1.995
16)31.920
16
---
159
144
---
152
144
---
80
80
---
0
```
0.34×19=6.46
```
0.34
× 19
----
306
34
----
6.46
```
*4.16÷16=0.26
```
0.26
16)4.16
32
---
96
96
---
0
```
验算：
```
16
×0.26
----
96
32
----
4.16
```
```
4.89
× 12
----
978
489
----
58.68
```
36×0.38=13.68
```
36
×0.38
----
288
108
----
13.68
```
*37.6÷47=0.8
```
0.8
47)37.6
376
---
0
```
验算：
```
47
×0.8
----
37.6
```
2.1÷14=0.15
```
0.15
14)2.10
14
---
70
70
---
0
```
0.75×32=24
```
0.75
× 32
----
150
225
----
24.00
```
*0.55×16=8.8
```
0.55
× 16
----
330
55
----
8.80
```
验算：
```
16
×0.55
----
80
80
----
8.80
```
10.29×21=216.09
```
10.29
× 21
----
1029
2058
----
216.09
```
55×1.22=67.1
```
55
×1.22
----
110
110
55
----
67.10
```
*4.68÷52=0.09
```
0.09
52)4.68
468
---
0
```
验算：
```
52
×0.09
----
4.68
```
8.34÷3=2.78
```
2.78
3)8.34
6
---
23
21
---
24
24
---
0
```
5.19×5=25.95
```
5.19
× 5
----
25.95
```
*20.48÷8=2.56
```
2.56
8)20.48
16
---
44
40
---
48
48
---
0
```
验算：
```
2.56
× 8
----
20.48
```
3.4×48=163.2
```
3.4
×48
----
272
136
----
163.2
```
55.8÷3=18.6
```
18.6
3)55.8
3
---
25
24
---
18
18
---
0
```
*54.4÷34=1.6
```
1.6
34)54.4
34
---
204
204
---
0
```
验算：
```
34
×1.6
----
204
34
----
54.4
```
21.2×41=869.2
```
21.2
× 41
----
212
848
----
869.2
```
6.18×22=135.96
```
6.18
× 22
----
1236
1236
----
135.96
```
*43.2÷27=1.6
```
1.6
27)43.2
27
---
162
162
---
0
```
验算：
```
27
×1.6
----
162
27
----
43.2
```
31.92÷16=1.995
```
1.995
16)31.920
16
---
159
144
---
152
144
---
80
80
---
0
```
0.34×19=6.46
```
0.34
× 19
----
306
34
----
6.46
```
*4.16÷16=0.26
```
0.26
16)4.16
32
---
96
96
---
0
```
验算：
```
16
×0.26
----
96
32
----
4.16
```
