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