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