2桁同士の乗算

(1)

 
×
20
＝
920

(2)

83
×
 
＝
3652

(3)

 
×
99
＝
1089

(4)

28
×
 
＝
2268

(5)

74
×
 
＝
814

(6)

 
×
42
＝
1008

(7)

 
×
53
＝
3180

(8)

25
×
 
＝
875

(9)

53
×
 
＝
742

(10)

 
×
95
＝
8170

(11)

 
×
74
＝
6882

(12)

78
×
 
＝
6006

(13)

48
×
 
＝
3936

(14)

31
×
 
＝
2294

(15)

37
×
 
＝
2849

(16)

 
×
77
＝
5544