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