2桁同士の乗算

(1)

 
×
13
＝
871

(2)

 
×
85
＝
4420

(3)

56
×
 
＝
2912

(4)

 
×
32
＝
3008

(5)

68
×
 
＝
1224

(6)

 
×
81
＝
3321

(7)

 
×
39
＝
2808

(8)

 
×
55
＝
605

(9)

43
×
 
＝
1720

(10)

 
×
83
＝
5976

(11)

45
×
 
＝
3375

(12)

19
×
 
＝
779

(13)

69
×
 
＝
6762

(14)

 
×
66
＝
3168

(15)

80
×
 
＝
1040

(16)

 
×
92
＝
2760