Erafsommen oplossen tot 50

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

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