Oefen de erbijsommen tot 50

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

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