2桁同士の乗算

(1)

83
×
 
＝
3652

(2)

83
×
 
＝
996

(3)

 
×
88
＝
4400

(4)

 
×
15
＝
1200

(5)

72
×
 
＝
3600

(6)

86
×
 
＝
8170

(7)

 
×
44
＝
1936

(8)

 
×
17
＝
1003

(9)

20
×
 
＝
1700

(10)

 
×
23
＝
1173

(11)

 
×
81
＝
7857

(12)

 
×
79
＝
7584

(13)

 
×
70
＝
5040

(14)

 
×
88
＝
6248

(15)

75
×
 
＝
3825

(16)

27
×
 
＝
2538