Oefen met erbij en eraf tot 50
In de mix
1.
25
15
–
=
2.
45
20
–
=
3.
20
15
+
=
4.
10
5
+
=
5.
15
5
+
=
6.
30
15
–
=
7.
10
5
+
=
8.
35
25
–
=
9.
20
15
–
=
10.
45
20
–
=
11.
40
25
–
=
12.
15
0
+
=
13.
15
10
+
=
14.
50
15
–
=
15.
25
5
+
=
16.
45
20
–
=
17.
25
20
+
=
18.
15
10
+
=
19.
25
15
–
=
20.
30
20
–
=
21.
45
25
–
=
22.
15
25
+
=
23.
30
20
–
=
24.
15
5
+
=