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