Erafsommen oplossen tot 50

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

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