Oefen de erafsommen tot 50

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

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