Oefen de erafsommen tot 50

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

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