Reken de erafsom tot 50 uit

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

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