Erbijsommen en erafsommen tot 100
In de mix
1.
70
30
–
=
2.
80
70
–
=
3.
100
90
–
=
4.
20
0
+
=
5.
20
20
+
=
6.
50
20
–
=
7.
40
10
+
=
8.
20
10
+
=
9.
40
30
–
=
10.
80
40
–
=
11.
20
0
+
=
12.
70
30
+
=
13.
30
20
+
=
14.
80
60
–
=
15.
20
40
+
=
16.
50
40
+
=
17.
20
0
+
=
18.
40
50
+
=
19.
30
20
–
=
20.
80
60
–
=
21.
90
20
–
=
22.
60
50
–
=
23.
30
20
+
=
24.
80
60
–
=