Oefen de erafsommen tot 50

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

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