2桁同士の乗算

(1)

 
×
42
＝
1134

(2)

81
×
 
＝
6642

(3)

44
×
 
＝
1540

(4)

 
×
97
＝
9506

(5)

32
×
 
＝
3104

(6)

85
×
 
＝
5865

(7)

75
×
 
＝
6450

(8)

28
×
 
＝
1820

(9)

60
×
 
＝
2460

(10)

 
×
22
＝
2134

(11)

25
×
 
＝
325

(12)

 
×
72
＝
6984

(13)

 
×
68
＝
4828

(14)

 
×
75
＝
3300

(15)

 
×
90
＝
1710

(16)

 
×
62
＝
1302