2桁同士の乗算

(1)

 
×
68
＝
5984

(2)

 
×
21
＝
1974

(3)

 
×
87
＝
957

(4)

 
×
40
＝
3880

(5)

 
×
82
＝
4920

(6)

 
×
85
＝
2720

(7)

 
×
40
＝
3560

(8)

 
×
87
＝
3132

(9)

 
×
27
＝
1917

(10)

 
×
38
＝
1824

(11)

 
×
59
＝
1003

(12)

 
×
62
＝
4402

(13)

84
×
 
＝
7980

(14)

 
×
52
＝
2912

(15)

58
×
 
＝
1740

(16)

 
×
54
＝
3780