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