Erafsommen oplossen tot 50

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

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