Oefen de erbijsommen tot 50

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

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