Oefen de erbijsommen tot 50

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

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