1桁同士の加算

(1)

 
＋
4
＝
12

(2)

 
＋
4
＝
10

(3)

 
＋
7
＝
13

(4)

 
＋
9
＝
13

(5)

9
＋
 
＝
14

(6)

8
＋
 
＝
11

(7)

6
＋
 
＝
14

(8)

 
＋
5
＝
10

(9)

 
＋
8
＝
10

(10)

 
＋
9
＝
16

(11)

4
＋
 
＝
10

(12)

 
＋
9
＝
17

(13)

 
＋
4
＝
13

(14)

 
＋
7
＝
10

(15)

 
＋
7
＝
12

(16)

9
＋
 
＝
15