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