Reken de erbijsom tot 50 uit

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

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