Oefen de erafsommen tot 50

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

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