Operasi tambah lingkungan 10

Front

3 + 3

Back

6

Front

6 + 2

Back

8

Front

2 + 3

Back

5

Front

6 + 3

Back

9

Front

5 + 1

Back

6

Front

4 + 1

Back

5

Front

3 + 2

Back

5

Front

4 + 2

Back

6

Front

1 + 4

Back

5

Front

4 + 1

Back

5