Optellen
8
+
3
=
____________________
6
+
7
=
____________________
8
+
2
=
____________________
5
+
7
=
____________________
8
+
8
=
____________________
7
+
____________________
.
=
13
____________________
+
6
=
15
____________________
+
6
+
=
10
12
=
9
+
____________________
____________________
+
4
=
1
6
