Erbijsommen tot 50

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

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