Oefen de erafsommen tot 50

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

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