Oefen de erbijsommen tot 50

Erbijsommen
1.
40
+
10
=
30
40
50
35
2.
10
+
40
=
45
50
40
35
3.
5
+
45
=
40
50
35
45
4.
5
+
30
=
45
35
30
40
5.
15
+
30
=
45
40
35
25
6.
10
+
0
=
10
15
20
5
7.
5
+
30
=
35
25
45
40
8.
30
+
0
=
30
35
25
40
9.
0
+
50
=
40
35
30
50
10.
5
+
10
=
15
25
10
20
11.
0
+
45
=
45
30
40
25
12.
20
+
0
=
25
10
20
30
13.
5
+
40
=
30
45
35
25
14.
25
+
10
=
25
30
35
45
15.
15
+
30
=
40
45
25
35
16.
10
+
15
=
35
20
25
30
17.
0
+
35
=
40
25
35
30
18.
10
+
0
=
20
10
15
0
19.
0
+
35
=
40
35
25
30
20.
40
+
5
=
45
40
30
25
21.
15
+
15
=
20
25
30
40
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen

Oefen de erbijsommen tot 50
| ANTWOORDEN

Erbijsommen
1.
40
+
10
=
30
40
50
35
2.
10
+
40
=
45
50
40
35
3.
5
+
45
=
40
50
35
45
4.
5
+
30
=
45
35
30
40
5.
15
+
30
=
45
40
35
25
6.
10
+
0
=
10
15
20
5
7.
5
+
30
=
35
25
45
40
8.
30
+
0
=
30
35
25
40
9.
0
+
50
=
40
35
30
50
10.
5
+
10
=
15
25
10
20
11.
0
+
45
=
45
30
40
25
12.
20
+
0
=
25
10
20
30
13.
5
+
40
=
30
45
35
25
14.
25
+
10
=
25
30
35
45
15.
15
+
30
=
40
45
25
35
16.
10
+
15
=
35
20
25
30
17.
0
+
35
=
40
25
35
30
18.
10
+
0
=
20
10
15
0
19.
0
+
35
=
40
35
25
30
20.
40
+
5
=
45
40
30
25
21.
15
+
15
=
20
25
30
40
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen