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