Oefen de erafsommen tot 50

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

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