2桁同士の乗算

(1)

31
×
 
＝
2666

(2)

 
×
52
＝
4056

(3)

27
×
 
＝
2376

(4)

19
×
 
＝
646

(5)

14
×
 
＝
350

(6)

 
×
23
＝
483

(7)

91
×
 
＝
5824

(8)

42
×
 
＝
2394

(9)

32
×
 
＝
2880

(10)

91
×
 
＝
8281

(11)

72
×
 
＝
1368

(12)

45
×
 
＝
3735

(13)

 
×
41
＝
2911

(14)

42
×
 
＝
3192

(15)

21
×
 
＝
1155

(16)

61
×
 
＝
5490