Erafsommen oplossen tot 50

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

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