2桁と1桁の乗算

(1)

20
×
 
＝
140

(2)

21
×
 
＝
168

(3)

 
×
5
＝
65

(4)

 
×
7
＝
385

(5)

 
×
4
＝
256

(6)

30
×
 
＝
90

(7)

 
×
1
＝
12

(8)

 
×
4
＝
232

(9)

 
×
4
＝
152

(10)

 
×
1
＝
18

(11)

 
×
4
＝
320

(12)

89
×
 
＝
356

(13)

 
×
2
＝
168

(14)

 
×
6
＝
396

(15)

 
×
6
＝
270

(16)

 
×
5
＝
85

(17)

 
×
4
＝
396

(18)

 
×
5
＝
225

(19)

17
×
 
＝
153

(20)

 
×
2
＝
196

(21)

63
×
 
＝
189

(22)

77
×
 
＝
385

(23)

19
×
 
＝
171

(24)

 
×
1
＝
68

(25)

 
×
6
＝
540

(26)

 
×
4
＝
292

(27)

 
×
6
＝
432

(28)

 
×
4
＝
248

(29)

31
×
 
＝
217

(30)

 
×
6
＝
420

(31)

18
×
 
＝
36

(32)

60
×
 
＝
180