Erbijsom en erafsom maken tot 50
In de mix
1.
25
20
–
=
2.
45
5
+
=
3.
15
10
+
=
4.
15
0
+
=
5.
15
5
+
=
6.
40
15
–
=
7.
40
5
+
=
8.
50
30
–
=
9.
45
35
–
=
10.
25
15
–
=
11.
45
30
–
=
12.
30
15
–
=
13.
35
5
+
=
14.
25
25
+
=
15.
20
25
+
=
16.
45
40
–
=
17.
15
5
+
=
18.
15
10
+
=
19.
35
25
–
=
20.
20
25
+
=
21.
15
5
+
=
22.
25
20
–
=
23.
30
20
+
=
24.
30
15
–
=