Oefen de erbijsommen tot 50

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

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