Oefen de erbijsommen tot 50

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

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