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