Maak de erafsom tot 50

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

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