Oefen de erbijsommen tot 50

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

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