Erbijsom en erafsom maken tot 50
In de mix
1.
15
5
+
=
2.
20
15
–
=
3.
30
10
+
=
4.
40
25
–
=
5.
30
15
–
=
6.
20
15
+
=
7.
40
20
–
=
8.
20
15
–
=
9.
20
15
–
=
10.
20
5
+
=
11.
25
20
–
=
12.
15
5
+
=
13.
15
5
+
=
14.
10
5
+
=
15.
50
35
–
=
16.
20
15
+
=
17.
25
5
+
=
18.
20
5
+
=
19.
30
15
+
=
20.
50
45
–
=
21.
25
20
–
=
22.
25
5
+
=
23.
25
20
–
=
24.
35
20
–
=