Oefen de erafsommen tot 50

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

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