Erafsommen oplossen tot 50

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

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