Oefen de erafsommen tot 50

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

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