Oefen de erafsommen tot 50

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

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