2桁同士の乗算

(1)

26
×
 
＝
1300

(2)

 
×
57
＝
912

(3)

 
×
14
＝
308

(4)

30
×
 
＝
1590

(5)

 
×
29
＝
1189

(6)

44
×
 
＝
4224

(7)

13
×
 
＝
1079

(8)

 
×
90
＝
3330

(9)

 
×
38
＝
1596

(10)

 
×
31
＝
1302

(11)

 
×
20
＝
920

(12)

 
×
89
＝
1513

(13)

 
×
10
＝
660

(14)

 
×
23
＝
966

(15)

 
×
65
＝
6175

(16)

 
×
63
＝
4851