Reken de erbijsom tot 50 uit

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

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