Oefen de erafsommen tot 50

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

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