Oefen de erbijsommen tot 50

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

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