Los de som tot 50 op

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

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