Erbijsommen en erafsommen tot 50
In de mix
1.
25
20
–
=
2.
15
10
+
=
3.
20
15
–
=
4.
25
25
+
=
5.
15
5
+
=
6.
15
5
+
=
7.
15
5
+
=
8.
25
15
–
=
9.
15
0
+
=
10.
15
5
+
=
11.
15
0
+
=
12.
30
20
+
=
13.
30
5
+
=
14.
30
5
+
=
15.
30
5
+
=
16.
20
15
–
=
17.
15
35
+
=
18.
15
5
+
=
19.
15
5
+
=
20.
20
15
–
=
21.
15
0
+
=
22.
20
20
+
=
23.
20
5
+
=
24.
10
5
+
=