2桁同士の乗算

(1)

17
×
 
＝
714

(2)

 
×
90
＝
1710

(3)

34
×
 
＝
1360

(4)

 
×
75
＝
2775

(5)

 
×
64
＝
5440

(6)

 
×
36
＝
2448

(7)

 
×
40
＝
2960

(8)

77
×
 
＝
3619

(9)

36
×
 
＝
3276

(10)

29
×
 
＝
2349

(11)

49
×
 
＝
3283

(12)

 
×
94
＝
1880

(13)

 
×
82
＝
5904

(14)

79
×
 
＝
1659

(15)

38
×
 
＝
2470

(16)

 
×
21
＝
2058