Oefen de erafsommen tot 50

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

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