Supersnelle sommen tot 50

Erbijsommen
1.
25
+
20
=
35
30
40
45
2.
30
+
20
=
45
50
35
40
3.
45
+
5
=
40
50
30
45
4.
30
+
0
=
40
25
20
30
5.
35
+
15
=
40
35
45
50
6.
40
+
0
=
35
25
40
30
7.
30
+
0
=
35
40
30
20
8.
45
+
0
=
40
45
25
30
9.
45
+
5
=
40
30
35
50
10.
5
+
0
=
5
20
25
15
11.
25
+
5
=
25
35
40
30
12.
35
+
10
=
40
25
45
30
13.
20
+
10
=
30
25
35
20
14.
50
+
0
=
40
30
50
45
15.
25
+
10
=
30
40
35
25
16.
45
+
0
=
30
25
45
40
17.
40
+
5
=
35
40
30
45
18.
45
+
5
=
45
30
50
40
19.
30
+
20
=
30
50
45
40
20.
50
+
0
=
30
35
45
50
21.
50
+
0
=
40
45
50
30
© JuniorEinstein.nl
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Supersnelle sommen tot 50
| ANTWOORDEN

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