2桁同士の乗算

(1)

 
×
55
＝
3575

(2)

52
×
 
＝
3848

(3)

 
×
17
＝
1445

(4)

 
×
25
＝
1475

(5)

 
×
18
＝
1188

(6)

45
×
 
＝
3870

(7)

84
×
 
＝
3948

(8)

 
×
85
＝
2040

(9)

 
×
16
＝
240

(10)

44
×
 
＝
484

(11)

24
×
 
＝
1608

(12)

90
×
 
＝
7020

(13)

 
×
96
＝
1152

(14)

15
×
 
＝
990

(15)

 
×
44
＝
3168

(16)

94
×
 
＝
1316