Kopfrechenaufgaben
Neu
⋮
plus
minus
mal
1
+
1
=
0
2
+
1
=
0
3
+
1
=
0
4
+
1
=
0
5
+
1
=
0
6
+
1
=
0
7
+
1
=
0
8
+
1
=
0
9
+
1
=
0
10
+
1
=
0