Oefen de erbijsommen tot 50

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

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