Erbijsommen en erafsommen tot 50
In de mix
1.
20
15
+
=
2.
50
35
–
=
3.
25
15
–
=
4.
15
15
+
=
5.
25
20
–
=
6.
30
15
+
=
7.
35
20
–
=
8.
25
5
+
=
9.
30
15
–
=
10.
50
30
–
=
11.
30
20
–
=
12.
15
15
+
=
13.
15
0
+
=
14.
25
20
–
=
15.
35
25
–
=
16.
30
20
+
=
17.
45
25
–
=
18.
15
0
+
=
19.
35
20
–
=
20.
15
20
+
=
21.
45
20
–
=
22.
30
15
–
=
23.
20
15
–
=
24.
50
15
–
=