Oefen de erbijsommen tot 50

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

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