Reken de erbijsom tot 50 uit

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

Erbijsommen
1.
15
+
20
=
35
2.
50
+
0
=
50
3.
30
+
15
=
45
4.
0
+
50
=
50
5.
5
+
45
=
50
6.
5
+
5
=
10
7.
35
+
15
=
50
8.
5
+
30
=
35
9.
10
+
20
=
30
10.
5
+
30
=
35
11.
35
+
5
=
40
12.
15
+
30
=
45
13.
15
+
25
=
40
14.
25
+
10
=
35
15.
50
+
0
=
50
16.
30
+
10
=
40
17.
10
+
30
=
40
18.
0
+
30
=
30
19.
35
+
10
=
45
20.
25
+
5
=
30
21.
0
+
50
=
50
22.
0
+
50
=
50
23.
20
+
5
=
25
24.
0
+
10
=
10
25.
20
+
15
=
35
26.
10
+
35
=
45
27.
40
+
0
=
40
28.
15
+
20
=
35
29.
25
+
20
=
45
30.
30
+
10
=
40
31.
0
+
15
=
15
32.
50
+
0
=
50
33.
30
+
5
=
35
34.
25
+
20
=
45
35.
5
+
45
=
50
36.
5
+
30
=
35
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen