Erafsommen oplossen tot 50

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

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