2桁同士の乗算

(1)

 
×
19
＝
266

(2)

 
×
32
＝
1920

(3)

71
×
 
＝
6319

(4)

 
×
51
＝
3315

(5)

87
×
 
＝
4350

(6)

 
×
68
＝
1564

(7)

12
×
 
＝
1140

(8)

65
×
 
＝
4160

(9)

 
×
73
＝
1825

(10)

 
×
31
＝
930

(11)

87
×
 
＝
8091

(12)

 
×
39
＝
2067

(13)

13
×
 
＝
1014

(14)

59
×
 
＝
826

(15)

 
×
87
＝
5916

(16)

 
×
22
＝
1870