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