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