2桁同士の乗算

(1)

 
×
20
＝
560

(2)

86
×
 
＝
4988

(3)

 
×
18
＝
1386

(4)

 
×
40
＝
2720

(5)

 
×
24
＝
1872

(6)

60
×
 
＝
5280

(7)

79
×
 
＝
7821

(8)

86
×
 
＝
4042

(9)

42
×
 
＝
2982

(10)

 
×
17
＝
1309

(11)

99
×
 
＝
990

(12)

 
×
33
＝
3003

(13)

 
×
87
＝
3828

(14)

93
×
 
＝
6231

(15)

 
×
43
＝
2064

(16)

91
×
 
＝
6006