Oefen de erbijsommen tot 50

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

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