Oefen de erbijsommen tot 50

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

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