Oefen de erbijsommen tot 50

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

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