2桁同士の乗算

(1)

31
×
 
＝
620

(2)

36
×
 
＝
1008

(3)

12
×
 
＝
1188

(4)

96
×
 
＝
8352

(5)

 
×
69
＝
1242

(6)

11
×
 
＝
715

(7)

15
×
 
＝
360

(8)

 
×
83
＝
6308

(9)

 
×
95
＝
6080

(10)

 
×
90
＝
7110

(11)

 
×
49
＝
3822

(12)

23
×
 
＝
1288

(13)

 
×
83
＝
3237

(14)

31
×
 
＝
868

(15)

92
×
 
＝
9016

(16)

 
×
26
＝
806