Oefen de erbijsommen tot 50

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

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