2桁同士の乗算

(1)

15
×
 
＝
1410

(2)

81
×
 
＝
3645

(3)

49
×
 
＝
3479

(4)

 
×
39
＝
1482

(5)

15
×
 
＝
1005

(6)

 
×
16
＝
1472

(7)

 
×
85
＝
5865

(8)

54
×
 
＝
5292

(9)

 
×
69
＝
1380

(10)

 
×
37
＝
3515

(11)

 
×
83
＝
4814

(12)

87
×
 
＝
3828

(13)

41
×
 
＝
1886

(14)

63
×
 
＝
1764

(15)

 
×
28
＝
756

(16)

24
×
 
＝
1152