Oefen de erbijsommen tot 50

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

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