Erafsommen oplossen tot 50

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

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