Maak de erafsom tot 50

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

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