Reken de erbijsom tot 50 uit

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

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