Reken de erbijsom tot 50 uit

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

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