Oefen de erbijsommen tot 50

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

Oefen de erbijsommen tot 50
| ANTWOORDEN

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