Oefen de erafsommen tot 50

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

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