1
+
1
=
____________________
2
+
1
=
____________________
2
+
2
=
____________________
3
+
2
=
____________________
4
+
1
=
____________________
2
+
2
=
____________________
3
+
3
=
____________________
2
+
0
=
____________________
6
+
0
=
____________________
1
+
6
=
7
