Oefen de erafsommen tot 50

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

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