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