Oefen de erafsommen tot 50

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

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