2桁同士の乗算

(1)

20
×
 
＝
860

(2)

13
×
 
＝
676

(3)

 
×
49
＝
4116

(4)

87
×
 
＝
4524

(5)

 
×
39
＝
3822

(6)

81
×
 
＝
1944

(7)

 
×
96
＝
6144

(8)

58
×
 
＝
2552

(9)

 
×
12
＝
768

(10)

92
×
 
＝
8832

(11)

 
×
63
＝
3654

(12)

30
×
 
＝
300

(13)

 
×
83
＝
5312

(14)

67
×
 
＝
2747

(15)

55
×
 
＝
715

(16)

83
×
 
＝
4482