2桁同士の乗算

(1)

 
×
30
＝
1230

(2)

 
×
45
＝
585

(3)

 
×
75
＝
3600

(4)

 
×
26
＝
2132

(5)

 
×
73
＝
4015

(6)

 
×
25
＝
500

(7)

 
×
13
＝
1274

(8)

80
×
 
＝
1840

(9)

69
×
 
＝
3795

(10)

 
×
32
＝
3168

(11)

 
×
46
＝
3404

(12)

 
×
25
＝
325

(13)

 
×
32
＝
1024

(14)

 
×
93
＝
7440

(15)

 
×
69
＝
6003

(16)

30
×
 
＝
2070