Erbijsom en erafsom maken tot 50
In de mix
1.
35
15
–
=
2.
15
5
+
=
3.
40
35
–
=
4.
45
5
+
=
5.
35
15
–
=
6.
15
5
+
=
7.
40
30
–
=
8.
30
15
+
=
9.
20
15
–
=
10.
30
15
–
=
11.
45
25
–
=
12.
20
10
+
=
13.
20
15
–
=
14.
25
5
+
=
15.
20
15
–
=
16.
15
5
+
=
17.
25
15
–
=
18.
45
15
–
=
19.
30
15
+
=
20.
15
15
+
=
21.
35
25
–
=
22.
20
15
–
=
23.
15
0
+
=
24.
15
20
+
=