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