1. 先写出商是几位数,再用竖式计算。
(
$509÷5= $```
101
5)509
5
---
09
5
---
4
```
509÷5=101……4
(
$241÷3= $```
80
3)241
24
---
1
```
241÷3=80……1
(
$628÷6= $```
104
6)628
6
---
28
24
---
4
```
628÷6=104……4
(
$690÷3= $```
230
3)690
6
---
9
9
---
0
```
690÷3=230
(
$751÷5= $```
150
5)751
5
---
25
25
---
1
```
751÷5=150……1
(
$950÷5= $```
190
5)950
5
---
45
45
---
0
```
950÷5=190
(
三
)位数$509÷5= $```
101
5)509
5
---
09
5
---
4
```
509÷5=101……4
(
两
)位数$241÷3= $```
80
3)241
24
---
1
```
241÷3=80……1
(
三
)位数$628÷6= $```
104
6)628
6
---
28
24
---
4
```
628÷6=104……4
(
三
)位数$690÷3= $```
230
3)690
6
---
9
9
---
0
```
690÷3=230
(
三
)位数$751÷5= $```
150
5)751
5
---
25
25
---
1
```
751÷5=150……1
(
三
)位数$950÷5= $```
190
5)950
5
---
45
45
---
0
```
950÷5=190
答案
三
```
101
5)509
5
---
09
5
---
4
```
509÷5=101……4
两
```
80
3)241
24
---
1
```
241÷3=80……1
三
```
104
6)628
6
---
28
24
---
4
```
628÷6=104……4
三
```
230
3)690
6
---
9
9
---
0
```
690÷3=230
三
```
150
5)751
5
---
25
25
---
1
```
751÷5=150……1
三
```
190
5)950
5
---
45
45
---
0
```
950÷5=190
```
101
5)509
5
---
09
5
---
4
```
509÷5=101……4
两
```
80
3)241
24
---
1
```
241÷3=80……1
三
```
104
6)628
6
---
28
24
---
4
```
628÷6=104……4
三
```
230
3)690
6
---
9
9
---
0
```
690÷3=230
三
```
150
5)751
5
---
25
25
---
1
```
751÷5=150……1
三
```
190
5)950
5
---
45
45
---
0
```
950÷5=190
2. 用竖式计算,打*的要验算。
$658÷6=$```
109
6)658
6
---
58
54
---
4
```
109……4
$562÷7=$```
80
7)562
56
---
2
```
80……2
$*842÷6=$```
140
6)842
6
---
24
24
---
2
```
140……2
验算:140×6+2=842
$680÷2=$```
340
2)680
6
---
8
8
---
0
```
340
$420÷4=$```
105
4)420
4
---
20
20
---
0
```
105
$*902÷3=$```
300
3)902
9
---
2
```
300……2
验算:300×3+2=902
$658÷6=$```
109
6)658
6
---
58
54
---
4
```
109……4
$562÷7=$```
80
7)562
56
---
2
```
80……2
$*842÷6=$```
140
6)842
6
---
24
24
---
2
```
140……2
验算:140×6+2=842
$680÷2=$```
340
2)680
6
---
8
8
---
0
```
340
$420÷4=$```
105
4)420
4
---
20
20
---
0
```
105
$*902÷3=$```
300
3)902
9
---
2
```
300……2
验算:300×3+2=902
答案
658÷6
```
109
6)658
6
---
58
54
---
4
```
109……4
562÷7
```
80
7)562
56
---
2
```
80……2
*842÷6
```
140
6)842
6
---
24
24
---
2
```
140……2
验算:140×6+2=842
680÷2
```
340
2)680
6
---
8
8
---
0
```
340
420÷4
```
105
4)420
4
---
20
20
---
0
```
105
*902÷3
```
300
3)902
9
---
2
```
300……2
验算:300×3+2=902
```
109
6)658
6
---
58
54
---
4
```
109……4
562÷7
```
80
7)562
56
---
2
```
80……2
*842÷6
```
140
6)842
6
---
24
24
---
2
```
140……2
验算:140×6+2=842
680÷2
```
340
2)680
6
---
8
8
---
0
```
340
420÷4
```
105
4)420
4
---
20
20
---
0
```
105
*902÷3
```
300
3)902
9
---
2
```
300……2
验算:300×3+2=902
3. 将算式前的序号填入合适的圈里。
①$403÷5$
②$780÷6$
③$836÷4$
④$627÷3$
⑤$642÷6$
⑥$758÷7$
⑦$643÷4$
⑧$563÷8$

①$403÷5$
②$780÷6$
③$836÷4$
④$627÷3$
⑤$642÷6$
⑥$758÷7$
⑦$643÷4$
⑧$563÷8$
答案
商中间有0:③④⑤⑥
商末尾有0:①②⑦⑧
商末尾有0:①②⑦⑧
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