1 直接写出得数。
2.8 ÷ 7 =
3.6 ÷ 4 =
0.25 ÷ 5 =
0.91 ÷ 7 =
7.2 ÷ 12 =
5.1 ÷ 17 =
0.78 ÷ 26 =
0.75 ÷ 15 =
2.8 ÷ 7 =
3.6 ÷ 4 =
0.25 ÷ 5 =
0.91 ÷ 7 =
7.2 ÷ 12 =
5.1 ÷ 17 =
0.78 ÷ 26 =
0.75 ÷ 15 =
答案
2.8 ÷ 7 = 0.4
3.6 ÷ 4 = 0.9
0.25 ÷ 5 = 0.05
0.91 ÷ 7 = 0.13
7.2 ÷ 12 = 0.6
5.1 ÷ 17 = 0.3
0.78 ÷ 26 = 0.03
0.75 ÷ 15 = 0.05
3.6 ÷ 4 = 0.9
0.25 ÷ 5 = 0.05
0.91 ÷ 7 = 0.13
7.2 ÷ 12 = 0.6
5.1 ÷ 17 = 0.3
0.78 ÷ 26 = 0.03
0.75 ÷ 15 = 0.05
2 用竖式计算,带 * 的用乘法验算。
6.23 ÷ 7 =
38 ÷ 95 =
0. 192 ÷ 4 =
1.38 ÷ 46 =
7.5 ÷ 12 =
69. ÷ 92 =
6.23 ÷ 7 =
38 ÷ 95 =
0. 192 ÷ 4 =
1.38 ÷ 46 =
7.5 ÷ 12 =
69. ÷ 92 =
答案
6.23 ÷ 7 = 0.89
```
0.89
7)6.23
5 6
----
63
63
----
0
```
---
38 ÷ 95 = 0.4
```
0.4
95)38.0
38 0
----
0
```
---
*0.192 ÷ 4 = 0.048
```
0.048
4)0.192
16
---
32
32
---
0
```
验算:
```
0.048
× 4
-------
0.192
```
---
1.38 ÷ 46 = 0.03
```
0.03
46)1.38
1 38
----
0
```
---
7.5 ÷ 12 = 0.625
```
0.625
12)7.500
7 2
----
30
24
----
60
60
----
0
```
---
*69 ÷ 92 = 0.75
```
0.75
92)69.00
64 4
----
460
460
----
0
```
验算:
```
0.75
× 92
------
150
675
------
69.00
```
```
0.89
7)6.23
5 6
----
63
63
----
0
```
---
38 ÷ 95 = 0.4
```
0.4
95)38.0
38 0
----
0
```
---
*0.192 ÷ 4 = 0.048
```
0.048
4)0.192
16
---
32
32
---
0
```
验算:
```
0.048
× 4
-------
0.192
```
---
1.38 ÷ 46 = 0.03
```
0.03
46)1.38
1 38
----
0
```
---
7.5 ÷ 12 = 0.625
```
0.625
12)7.500
7 2
----
30
24
----
60
60
----
0
```
---
*69 ÷ 92 = 0.75
```
0.75
92)69.00
64 4
----
460
460
----
0
```
验算:
```
0.75
× 92
------
150
675
------
69.00
```
3 2021年9月20日15时10分,搭载着天舟三号货运飞船的长征七号遥四运载火箭发射升空,约597秒后,飞船与搭载火箭成功分离,进入预定轨道。请你算一算,飞船从升空到进入预定轨道一共用了多少分钟?
答案
597÷60=9.95(分钟)
答:飞船从升空到进入预定轨道一共用了9.95分钟。
答:飞船从升空到进入预定轨道一共用了9.95分钟。
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