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