Oefen de erbijsommen tot 50

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

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