2桁同士の乗算

(1)

42
×
 
＝
630

(2)

20
×
 
＝
1940

(3)

84
×
 
＝
3192

(4)

 
×
21
＝
819

(5)

 
×
13
＝
247

(6)

64
×
 
＝
4288

(7)

 
×
60
＝
2460

(8)

 
×
39
＝
936

(9)

 
×
59
＝
5782

(10)

 
×
96
＝
9312

(11)

63
×
 
＝
3906

(12)

97
×
 
＝
5626

(13)

 
×
89
＝
4450

(14)

34
×
 
＝
3298

(15)

13
×
 
＝
832

(16)

71
×
 
＝
1065