2桁同士の乗算

(1)

 
×
99
＝
7623

(2)

78
×
 
＝
4836

(3)

 
×
26
＝
2574

(4)

 
×
45
＝
3105

(5)

67
×
 
＝
6432

(6)

 
×
68
＝
816

(7)

80
×
 
＝
1840

(8)

 
×
27
＝
1377

(9)

20
×
 
＝
860

(10)

 
×
74
＝
7104

(11)

26
×
 
＝
1274

(12)

 
×
69
＝
5865

(13)

10
×
 
＝
450

(14)

 
×
37
＝
666

(15)

 
×
80
＝
7120

(16)

 
×
45
＝
2565