Supersnelle sommen tot 50

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

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