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