Oefen de erafsommen tot 50

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

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