Oefen de erbijsommen tot 50

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

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