Oefen de erafsommen tot 50

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

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