Oefen de erbijsommen tot 50

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

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