2桁同士の乗算

(1)

 
×
18
＝
1404

(2)

 
×
99
＝
4257

(3)

97
×
 
＝
5917

(4)

 
×
75
＝
2325

(5)

 
×
80
＝
2960

(6)

 
×
28
＝
448

(7)

39
×
 
＝
1911

(8)

82
×
 
＝
6068

(9)

98
×
 
＝
3038

(10)

 
×
15
＝
555

(11)

 
×
27
＝
1755

(12)

84
×
 
＝
5124

(13)

 
×
84
＝
4116

(14)

30
×
 
＝
2760

(15)

34
×
 
＝
2618

(16)

71
×
 
＝
6816