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