Oefen de erbijsommen tot 50

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

Oefen de erbijsommen tot 50
| ANTWOORDEN

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