Reken de erbijsom tot 50 uit

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

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