SUMA
2
+
2
=
____________________
5
+
2
=
____________________
3
+
3
=
____________________
2
+
1
=
____________________
7
+
2
=
____________________
RESTA
2
-
1
=
____________________
10
-
4
=
____________________
5
-
2
=
____________________
7
-
3
=
____________________
9
-
3
=
6
