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