Oefen de erbijsommen tot 50

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

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