Erafsommen oplossen tot 50

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

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