Los de som tot 50 op

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

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