Oefen de erbijsommen tot 50

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

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