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