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