Oefen de erbijsommen tot 50

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

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