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