Oefen de erbijsommen tot 50

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

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