2桁同士の乗算

(1)

 
×
91
＝
1729

(2)

 
×
30
＝
2010

(3)

 
×
57
＝
4560

(4)

18
×
 
＝
1674

(5)

49
×
 
＝
2450

(6)

63
×
 
＝
5292

(7)

66
×
 
＝
3234

(8)

 
×
71
＝
3124

(9)

58
×
 
＝
2204

(10)

 
×
93
＝
1209

(11)

28
×
 
＝
980

(12)

16
×
 
＝
1456

(13)

37
×
 
＝
2775

(14)

 
×
57
＝
3933

(15)

16
×
 
＝
608

(16)

30
×
 
＝
2010