Oefen de erbijsommen tot 50

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

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