Oefen de erafsommen tot 50

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

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