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