Oefen de erafsommen tot 50

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

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