Reken de erafsom tot 50 uit

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

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