Oefen de erbijsommen tot 50

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

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