1.直接写得数。
24×300=
72×50=
19×60=
240×50=
380×4=
270×30=
990×8=
14×600=
25×40=
360×2=
18×50=
24×20=
130×30=
11×70=
22×40=
35×2=
120×4=
210×3=
150×60=
170×5=
24×300=
72×50=
19×60=
240×50=
380×4=
270×30=
990×8=
14×600=
25×40=
360×2=
18×50=
24×20=
130×30=
11×70=
22×40=
35×2=
120×4=
210×3=
150×60=
170×5=
答案
24×300=7200
72×50=3600
19×60=1140
240×50=12000
380×4=1520
270×30=8100
990×8=7920
14×600=8400
25×40=1000
360×2=720
18×50=900
24×20=480
130×30=3900
11×70=770
22×40=880
35×2=70
120×4=480
210×3=630
150×60=9000
170×5=850
72×50=3600
19×60=1140
240×50=12000
380×4=1520
270×30=8100
990×8=7920
14×600=8400
25×40=1000
360×2=720
18×50=900
24×20=480
130×30=3900
11×70=770
22×40=880
35×2=70
120×4=480
210×3=630
150×60=9000
170×5=850
2.用竖式计算。
$207×8=$
$260×15=$
$508×6=$
$723×24=$
$579×7=$
$340×26=$
$9×805=$
$670×14=$
$50×404=$
$480×37=$
$605×7=$
$16×356=$
$207×8=$
$260×15=$
$508×6=$
$723×24=$
$579×7=$
$340×26=$
$9×805=$
$670×14=$
$50×404=$
$480×37=$
$605×7=$
$16×356=$
答案
$207×8=1656$
```
207
× 8
------
1656
```
$260×15=3900$
```
260
× 15
------
130
26
------
3900
```
$508×6=3048$
```
508
× 6
------
3048
```
$723×24=17352$
```
723
× 24
------
2892
1446
------
17352
```
$579×7=4053$
```
579
× 7
------
4053
```
$340×26=8840$
```
340
× 26
------
204
68
------
8840
```
$9×805=7245$
```
805
× 9
------
7245
```
$670×14=9380$
```
670
× 14
------
268
67
------
9380
```
$50×404=20200$
```
404
× 50
------
20200
```
$480×37=17760$
```
480
× 37
------
336
144
------
17760
```
$605×7=4235$
```
605
× 7
------
4235
```
$16×356=5696$
```
356
× 16
------
2136
356
------
5696
```
```
207
× 8
------
1656
```
$260×15=3900$
```
260
× 15
------
130
26
------
3900
```
$508×6=3048$
```
508
× 6
------
3048
```
$723×24=17352$
```
723
× 24
------
2892
1446
------
17352
```
$579×7=4053$
```
579
× 7
------
4053
```
$340×26=8840$
```
340
× 26
------
204
68
------
8840
```
$9×805=7245$
```
805
× 9
------
7245
```
$670×14=9380$
```
670
× 14
------
268
67
------
9380
```
$50×404=20200$
```
404
× 50
------
20200
```
$480×37=17760$
```
480
× 37
------
336
144
------
17760
```
$605×7=4235$
```
605
× 7
------
4235
```
$16×356=5696$
```
356
× 16
------
2136
356
------
5696
```
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