Oefen de erbijsommen tot 50

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

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