Oefen de erbijsommen tot 50

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

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