Oefen de erbijsommen tot 50

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

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