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