2桁同士の乗算

(1)

79
×
 
＝
6873

(2)

 
×
59
＝
5015

(3)

 
×
85
＝
1615

(4)

 
×
40
＝
3480

(5)

19
×
 
＝
1387

(6)

81
×
 
＝
6642

(7)

97
×
 
＝
1164

(8)

 
×
87
＝
4089

(9)

14
×
 
＝
252

(10)

10
×
 
＝
840

(11)

99
×
 
＝
1485

(12)

22
×
 
＝
2112

(13)

64
×
 
＝
1984

(14)

 
×
82
＝
5986

(15)

89
×
 
＝
890

(16)

 
×
35
＝
2905