Reken de erbijsom tot 50 uit

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

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