Oefen de erbijsommen tot 50

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

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