Oefen de erafsommen tot 50

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

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