Erafsommen oplossen tot 50

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

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