Erbijsommen en erafsommen tot 100
In de mix
1.
40
30
–
=
2.
20
30
+
=
3.
20
20
+
=
4.
80
50
–
=
5.
40
20
+
=
6.
40
20
–
=
7.
20
30
+
=
8.
30
70
+
=
9.
20
20
+
=
10.
70
50
–
=
11.
40
20
–
=
12.
40
20
+
=
13.
100
60
–
=
14.
60
10
+
=
15.
10
10
+
=
16.
90
60
–
=
17.
40
50
+
=
18.
30
70
+
=
19.
40
10
+
=
20.
20
10
+
=
21.
50
30
+
=
22.
80
70
–
=
23.
60
30
+
=
24.
60
40
+
=