2桁同士の乗算

(1)

81
×
 
＝
2673

(2)

 
×
42
＝
2268

(3)

78
×
 
＝
3198

(4)

86
×
 
＝
4472

(5)

13
×
 
＝
949

(6)

 
×
19
＝
1463

(7)

 
×
82
＝
3526

(8)

16
×
 
＝
352

(9)

 
×
40
＝
2000

(10)

 
×
39
＝
1833

(11)

 
×
50
＝
4800

(12)

 
×
66
＝
792

(13)

30
×
 
＝
300

(14)

51
×
 
＝
1683

(15)

 
×
58
＝
2030

(16)

 
×
11
＝
803