Oefen de erbijsommen tot 50

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

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