2桁同士の乗算

(1)

 
×
20
＝
740

(2)

 
×
64
＝
5504

(3)

 
×
73
＝
730

(4)

 
×
91
＝
2275

(5)

 
×
26
＝
1430

(6)

 
×
16
＝
1248

(7)

30
×
 
＝
1440

(8)

 
×
87
＝
7134

(9)

34
×
 
＝
2754

(10)

40
×
 
＝
1200

(11)

 
×
60
＝
5880

(12)

66
×
 
＝
4092

(13)

27
×
 
＝
1539

(14)

29
×
 
＝
1711

(15)

26
×
 
＝
338

(16)

 
×
49
＝
931