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