Oefen de erbijsommen tot 50

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

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