Erafsommen oplossen tot 50

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

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