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