Reken de erbijsom tot 50 uit
Erbijsommen
1.
0
+
25
=
2.
40
+
10
=
3.
30
+
20
=
4.
0
+
45
=
5.
5
+
25
=
6.
35
+
15
=
7.
5
+
40
=
8.
5
+
0
=
9.
20
+
20
=
10.
20
+
25
=
11.
40
+
0
=
12.
30
+
10
=
13.
5
+
40
=
14.
40
+
0
=
15.
0
+
5
=
16.
20
+
25
=
17.
0
+
45
=
18.
20
+
30
=
19.
20
+
15
=
20.
30
+
5
=
21.
0
+
10
=
22.
25
+
20
=
23.
25
+
10
=
24.
35
+
5
=
25.
10
+
15
=
26.
40
+
5
=
27.
40
+
0
=
28.
20
+
10
=
29.
30
+
0
=
30.
5
+
40
=
31.
45
+
5
=
32.
10
+
20
=
33.
35
+
15
=
34.
35
+
0
=
35.
5
+
25
=
36.
0
+
45
=