Reken de erafsom tot 50 uit

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

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