Oefen de erafsommen tot 50

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

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