Reken de erbijsom tot 50 uit

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

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