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1. 直接写出得数。
2.8÷0.4=
1.6÷0.1=
1.4÷0.2=
4.9÷0.7=
0.92÷0.23=
1.8÷0.2=
12.5÷0.25=
4.8÷0.3=
2.8÷0.4=
7
4.5÷0.9=5
4.08÷0.2=20.4
2.7÷2.7×0.3=0.3
1.6÷0.1=
16
2.4÷1.2=2
0.91÷0.13=7
5.7÷0.01÷0.1=5700
1.4÷0.2=
7
6.6÷1.1=6
0.48÷0.04=12
5.4÷0.9×0.6=3.6
4.9÷0.7=
7
7.8÷0.3=26
0.36÷1.8=0.2
2.1÷0.7×2=6
0.92÷0.23=
4
0.27÷0.03=9
18.9÷0.9=21
0.24÷0.01×5=120
1.8÷0.2=
9
0.36÷0.12=3
7.26÷0.6=12.1
3.4×2÷0.17=40
12.5÷0.25=
50
1.44÷0.12=12
21.9÷0.3=73
8.4÷0.4×20=420
4.8÷0.3=
16
0.81÷0.27=3
0.625÷0.05=12.5
14.7÷0.7×0.1=2.1
答案
1. 7 5 20.4 0.3 16 2 7 5700 7 6 12 3.6 7 26 0.2 6 4 9 21 120 9 3 12.1 40 50 12 73 420 16 3 12.5 2.1
2. 用竖式计算,带☆的要验算。
12.92÷3.4=
4.95÷3.3=
12.92÷3.4=
3.8
☆25.83÷2.1=12.3
7.49÷0.28=26.75
4.95÷3.3=
1.5
☆42.92÷3.7=11.6
12.88÷4.6=2.8
答案
2. 3.8 12.3 26.75 1.5 11.6 2.8 竖式及验算略
解析
```
12.92÷3.4=3.8
```
```
3.8
3.4)12.9.2
10 2
----
2 72
2 72
----
0
```
```
☆25.83÷2.1=12.3
```
```
12.3
2.1)258.3
21
---
48
42
---
63
63
---
0
```
验算：
```
12.3
× 2.1
------
123
246
------
25.83
```
```
7.49÷0.28=26.75
```
```
26.75
0.28)749.00
56
---
189
168
---
210
196
---
140
140
---
0
```
```
4.95÷3.3=1.5
```
```
1.5
3.3)49.5
33
---
165
165
---
0
```
```
☆42.92÷3.7=11.6
```
```
11.6
3.7)429.2
37
---
59
37
---
222
222
---
0
```
验算：
```
11.6
× 3.7
------
812
348
------
42.92
```
```
12.88÷4.6=2.8
```
```
2.8
4.6)128.8
92
---
368
368
---
0
```
12.92÷3.4=3.8
```
```
3.8
3.4)12.9.2
10 2
----
2 72
2 72
----
0
```
```
☆25.83÷2.1=12.3
```
```
12.3
2.1)258.3
21
---
48
42
---
63
63
---
0
```
验算：
```
12.3
× 2.1
------
123
246
------
25.83
```
```
7.49÷0.28=26.75
```
```
26.75
0.28)749.00
56
---
189
168
---
210
196
---
140
140
---
0
```
```
4.95÷3.3=1.5
```
```
1.5
3.3)49.5
33
---
165
165
---
0
```
```
☆42.92÷3.7=11.6
```
```
11.6
3.7)429.2
37
---
59
37
---
222
222
---
0
```
验算：
```
11.6
× 3.7
------
812
348
------
42.92
```
```
12.88÷4.6=2.8
```
```
2.8
4.6)128.8
92
---
368
368
---
0
```
亮亮在计算一个数除以一个两位小数时,忘了点除数的小数点,结果是0.012,正确的结果应该是多少？
答案
0.012×100=1.2
