Los de som tot 50 op

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

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