2桁同士の乗算

(1)

 
×
38
＝
1596

(2)

 
×
66
＝
5412

(3)

 
×
15
＝
1005

(4)

49
×
 
＝
4802

(5)

 
×
90
＝
4410

(6)

 
×
63
＝
2142

(7)

19
×
 
＝
1653

(8)

 
×
64
＝
2432

(9)

 
×
62
＝
1550

(10)

68
×
 
＝
952

(11)

82
×
 
＝
6068

(12)

 
×
42
＝
2478

(13)

62
×
 
＝
930

(14)

 
×
52
＝
2808

(15)

 
×
72
＝
2376

(16)

 
×
51
＝
1887