Oefen de erbijsommen tot 50

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

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