Maak de erafsom tot 50

Erafsommen
1.
30
–
30
=
2.
15
–
0
=
3.
50
–
15
=
4.
20
–
10
=
5.
40
–
15
=
6.
20
–
5
=
7.
30
–
15
=
8.
20
–
0
=
9.
5
–
5
=
10.
15
–
5
=
11.
20
–
15
=
12.
25
–
25
=
13.
35
–
25
=
14.
20
–
10
=
15.
50
–
40
=
16.
10
–
5
=
17.
30
–
15
=
18.
15
–
5
=
19.
20
–
0
=
20.
35
–
35
=
21.
30
–
25
=
22.
30
–
5
=
23.
25
–
25
=
24.
5
–
0
=
25.
40
–
10
=
26.
35
–
0
=
27.
5
–
5
=
28.
10
–
5
=
29.
20
–
20
=
30.
45
–
40
=
31.
25
–
20
=
32.
5
–
0
=
33.
15
–
10
=
34.
45
–
15
=
35.
50
–
10
=
36.
25
–
20
=
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Maak de erafsom tot 50
| ANTWOORDEN

Erafsommen
1.
30
–
30
=
0
2.
15
–
0
=
15
3.
50
–
15
=
35
4.
20
–
10
=
10
5.
40
–
15
=
25
6.
20
–
5
=
15
7.
30
–
15
=
15
8.
20
–
0
=
20
9.
5
–
5
=
0
10.
15
–
5
=
10
11.
20
–
15
=
5
12.
25
–
25
=
0
13.
35
–
25
=
10
14.
20
–
10
=
10
15.
50
–
40
=
10
16.
10
–
5
=
5
17.
30
–
15
=
15
18.
15
–
5
=
10
19.
20
–
0
=
20
20.
35
–
35
=
0
21.
30
–
25
=
5
22.
30
–
5
=
25
23.
25
–
25
=
0
24.
5
–
0
=
5
25.
40
–
10
=
30
26.
35
–
0
=
35
27.
5
–
5
=
0
28.
10
–
5
=
5
29.
20
–
20
=
0
30.
45
–
40
=
5
31.
25
–
20
=
5
32.
5
–
0
=
5
33.
15
–
10
=
5
34.
45
–
15
=
30
35.
50
–
10
=
40
36.
25
–
20
=
5
© JuniorEinstein.nl
Online oefenen  |   Educatieve boeken  |   Werkbladen  |   Educatieve materialen