2桁同士の乗算

(1)

56
×
 
＝
3528

(2)

 
×
21
＝
1029

(3)

33
×
 
＝
1881

(4)

 
×
74
＝
6438

(5)

85
×
 
＝
4420

(6)

 
×
44
＝
1056

(7)

54
×
 
＝
1728

(8)

 
×
68
＝
5848

(9)

22
×
 
＝
1496

(10)

 
×
12
＝
780

(11)

 
×
47
＝
3149

(12)

71
×
 
＝
6745

(13)

 
×
57
＝
2622

(14)

 
×
21
＝
2079

(15)

 
×
21
＝
1680

(16)

 
×
59
＝
2242