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