Oefen de erbijsommen tot 50

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

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